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AM15™ .22LR UPPER RECEIVER <br>LMG OPEN BOLT FIRE CONTROL<br><font color="blue">- FULL AUTO FOR M16 ONLY</font>
AM15 is now my favorite gun to shoot. I saw the video that T ..
5 of 5 Stars!
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*** READ THIS ***
You MUST have a full auto M16 Machine Gun (NOT AN AR15) in order to purchase or use our AM15 UPPER RECEIVER. We DO NOT sell M16's or complete guns ready to shoot. If you do not have an M16 (NOT AN AR15), you can not purchase or use this AM15 Upper Receiver. NO EXCEPTIONS.
This product is temporarily out of stock.

AM15™ .22LR UPPER RECEIVER
LMG OPEN BOLT FIRE CONTROL
- FULL AUTO FOR M16 ONLY

  • Tactical Innovations Inc.
Atypical Item - Not Eligible For Free Shipping
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$1,849.99 Our Low Price!
Temporarily Out Of Stock

The AM15 full auto UPPER RECEIVER allows you to shoot unmodified .22LR American 180 drums, in either 165 round or 275 round capacity on YOUR M16 host receiver. The full auto AM15 upper receiver conversion is a BATF APPROVED OPEN BOLT drum fed .22LR rimfire caliber conversion that ejects through the AR mag well. It uses Colt Light Machine Gun style open bolt fire control parts, which are included with the AM15 conversion. The AM15 conversion will only work on registered receiver sear drilled M16 lowers. It WILL NOT work with drop-in auto sears or with lightning links.

                 THIS CONVERSION WILL NOT WORK ON ANY SEMI AUTO AR15. M16 ONLY

The AM15 Upper Receiver has a flattop style top cover that works well with an Eotech or comparable optic sight (which are not included with the AM15 Upper Receiver Conversion).  The AM15 Upper Receiver comes standard with a billet machined quad mount ventilated barrel rail system which will allow the user to install any optional AR accessories of their choice on either of the 4 different mounting rails. The full auto 9.5 inch barrel is threaded 1/2x28-.400 and will accept AR flashhiders or full auto rated suppressors.

The complete AM15 Upper Receiver assembly,  open bolt fire control parts, recoil buffer assembly, along with  one 165 rd drum with stainless steel baseplate installed, winder and barrel with quadrail and no sights is $1850 plus shipping.

 

CLICK FOR VIDEO
  • AM15™ .22LR UPPER RECEIVER LMG OPEN BOLT FIRE CONTROL- FULL AUTO FOR M16 ONLY
  • AM15™ .22LR UPPER RECEIVER LMG OPEN BOLT FIRE CONTROL- FULL AUTO FOR M16 ONLY
  • AM15™ .22LR UPPER RECEIVER LMG OPEN BOLT FIRE CONTROL- FULL AUTO FOR M16 ONLY
  • AM15™ .22LR UPPER RECEIVER LMG OPEN BOLT FIRE CONTROL- FULL AUTO FOR M16 ONLY

Overall Rating: 4.86 out of 5

Share Your Experience - Write a Review

  • Jimmy RiegenBrigham City, UT

    Date: 12/02/2010

    This is the most fun I've had shooting in a long time. I was thinking about getting one for a long time and kept watching the Utube movies of everyone shooting theirs so I figured it must work. When mine got here, the machine work is very nice and clean and everything has a good fit and finish. This is not a cheap slammed together kit. It took me about 2 hrs to figure how to put it together but I was taking my time and looking at everything while I was doing it (and drinking a beer). The drums are kind of tricky to load until you figure them out and its easy to spin one and have all the bullets on the floor (yes it will happen to you too) but I'm past that learning curve now. The test firing was also smooth and it ran like a chainsaw. Everybody at the range came over to see what I was shooting. This is a wonderful accessory for anyone that has an M16.

    Was this review helpful?yesno 13 found it helpful | 2 did not
  • Kyle LouisMiddletown, KY

    Date: 08/01/2010

    I waited forever for this then I had to send it back cause the mag would not hold in. They were great about fixing it. Well, its the most fun you can have with an M16!!!!!!!!!! I would recomend buying the stainless steel bottom for the mags. It works flawless with it. My plastic bottom mags suck. It freaks the hell out of my employees when I shoot this outside my office. You should buy one just to keep the stress down. I did and love it!!!!!!!!!!

    Was this review helpful?yesno 11 found it helpful | 3 did not
  • Tony BransonRapid City, SD

    Date: 06/16/2010

    It really does work as well as you see in the youtube videos. $1700 seemed like a lot of cash for an upper but you also get the lower parts for the open bolt set up (how about that last piece now Tactical?!). It took me a hour or so to get it put together the first time but now I can get it swapped into my lower in less than 10 mins but usually I just leave my lower with my AM15 on it since I can afford to shoot it. Everything on the gun is quality made and very solid. Like everyone said, swap the plastic bases for the stainless steel bases and it runs much better. Its very fun to shoot and I'm glad I bought it.

    Was this review helpful?yesno 13 found it helpful | 2 did not
  • Lewis WilsonMonroeville, PA

    Date: 05/17/2010

    Anyone that has an M16 and does not get this conversion is a fool. Every part of the conversion is well made and except for the cheap plastic drums from E&L, my AM15 runs better than my full auto american 180. It takes a little time to figure out the open bolt parts but once you figure it out, I can change mine back and forth in about 3 or 4 mins without any trouble. My kit did not like the Remngton bulk ammo but shot the &*$% out of the federal bulk ammo from maomart. I probably should get some spare parts for it just in case but nothing looks like it can break. If anyone has any ideas on what spare parts to get, post a thread on subguns. Now I need one in 223 in case my shrike never gets shipped.

    Was this review helpful?yesno 15 found it helpful | 5 did not
  • Marty CollinsCharleston, WV

    Date: 05/11/2010

    Machine work is beautiful. Design is perfect. Only failures I have had is when the bullet primer does not ignite. When you shoot this thing people stop and watch and come over to see what you have. Its like a minigun on .22's! If you have an M16 and want to have more fun than you've had in a long time, buy this AM15 and let 'er rip.

    Was this review helpful?yesno 14 found it helpful | 2 did not
  • Harrison DavisThe Beach, FL

    Date: 05/06/2010

    AM15 is now my favorite gun to shoot. I saw the video that TI had online and thought that of course they will show it working well but then I started seeing videos that other people did (loved that one with the bowling pins in NV by the way) and knew that it had to work based on all the feed back. It took me a little while to figure out how to put it all together but now I can do it in about 5 mins or less. Pretty simple once you do it the first time. Biggest problem is running out of ammo and loading those drums. Load them before you go to shoot and you'll have the most fun. Thanks for a great addition to my M16!

    Was this review helpful?yesno 11 found it helpful | 2 did not

AM15 ASSEMBLY FOR M16

 

Your AM15 UPPER RECEIVER will allow you to easily convert your M16 registered lower receiver into the same functionality of an American 180 .22LR machine gun. Before you install the AM15 on your M16 lower receiver and attempt to fire the AM15, please read all of these Installation Instructions and also read the Operating Instructions. For ease of reading, the Assembly Procedure is divided into 4 sections:

1. AM15 ASSEMBLY OVERVIEW
2. AM15 BUFFER ASSEMBLY INSTALLATION
3. AM15 FIRE CONTROL ASSEMBLY AND OPERATION
4. AM15 UPPER RECEIVER ASSEMBLY

After completing all four sections, your AM15 will be functional and ready to fire. However, before shooting your AM15, refer to and follow the AM15 OPERATING PROCEDURES. 

 

SECTION 1: AM15 ASSEMBLY OVERVIEW

* CAUTION: Prior to assembling, first ensure that your M16 is not loaded.

*CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm such as the AM15, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

* Carefully remove all parts from the shipping box. Do not remove them from the plastic packaging until ready to install each part. The parts that are included with the AM15 Upper Receiver kit are shown below with a corresponding number to reference with the assembly instructions.

AM15 OPERATION AND FUNCTION OVERVIEW The AM15 Upper Receiver .22LR Conversion kit is patterned after the original American 180 .22LR machine gun which fires from an OPEN BOLT, which means that it fires from the bolt in the rearward position like an UZI, MAC or a Thompson. A traditional M16 fires from a closed bolt, meaning that the bolt is mated with the barrel with a round in the chamber, waiting for the trigger to be pulled when the gun is ready to fire, much like almost all modern semi automatic firearms operate.

Open bolt operation of the AM15 provides many advantages that far outweigh the minimal inconvenience of having to swap your M16 lower fire control parts. The AM15 comes with the required Colt Light Machinegun open bolt fire control parts to convert your M16 lower to operate similarly to the Colt Light Machinegun open bolt configuration.

Using the Colt Light Machinegun operating principle, the hammer, trigger, and sear are replaced with similar looking parts. However, the parts now assume a different role in the operation of the firearm. (1) The hammer now becomes the sear, in that it engages the bolt and holds it back ready to fire or it disengages the bolt and allows the bolt to reciprocate while firing. (2) The sear now becomes an actuator for the hammer (which is now the sear). As you pull the trigger, the sear rocks the hammer to either capture or release the bolt. For simplicity and clarity, although the function of the parts change, each part will retain its traditional description for the assembly and operation instructions (ie the hammer is the hammer etc).

The AM15 does not have a moving firing pin. Primer ignition is accomplished by means of a permanently machined firing pin in the face of the bolt. Each time the bolt moves forward, it strips a round of ammunition from the feed block and chambers it. When the round is fully chambered and the bolt can not continue any farther forward, the firing pin crushes the rim against the face of the barrel and ignites the round. Thus it is not possible to chamber a round without firing it using an open bolt machine gun. A round will only be in the chamber when it is being fired.

 

CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

 

SECTION 2: AM15 BUFFER ASSEMBLY INSTALLATION

*CAUTION: Prior to assembling, first ensure that your M16 is not loaded. *CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

* Carefully remove all parts from the shipping box. Do not remove them from the plastic packaging until ready to install each part.

BUFFER ASSEMBLY INSTALLATION:

1. Remove .223 upper receiver from M16 lower receiver. Put .223 upper receiver away.

2. Remove .223 buffer and spring from the stock tube. NO parts from the .223 stock or buffer or springs are used with the AM15 Upper Receiver Kit.

3. A CAR stock ADJUSTABLE LENGTH BUFFER (#9) as well as an A2 STOCK SPACER (#11) are included in your AM15 Upper Receiver Conversion Kit. When using your AM15 kit on an M16 with a collapsible CAR stock, only the CAR ADJUSTABLE LENGTH BUFFER is required. If you are going to use your AM15 on a full length A2 style stock, the A2 STOCK SPACER is also required.

For a CAR length stock, install only the CAR ADJUSTABLE LENGTH BUFFER (#9) into your stock with the adjustment bolt in the rear of the stock (ie the adjustment bolt would go into the stock tube first).

For an A2 full length stock, first insert the STOCK SPACER (#11) and then ALSO insert the CAR ADJUSTABLE LENGTH BUFFER (#9) into your stock with the adjustment bolt in the rear of the stock (ie the adjustment bolt would go into the stock tube first). When installed correctly, the adjustment bolt would directly in contact with the STOCK SPACER (#11)

Your AM15 buffer parts are now installed and you can proceed with the installation of the open bolt fire control parts.

 

SECTION 3: AM15 FIRE CONTROL ASSEMBLY AND OPERATION

* CAUTION: Prior to assembling, first ensure that your M16 is not loaded.

*CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

* Carefully remove all parts from the shipping box. Do not remove them from the plastic packaging until ready to install each part.

FIRE CONTROL ASSEMBLY:

1. Remove .223 upper receiver from M16 lower receiver. Put .223 upper receiver away.

2. Remove all closed bolt M16 lower receiver fire control parts to include (1) hammer and pin, (2) trigger, disconnector and pin, (3) sear and pin, (4) selector. Use caution not to lose the detent and spring for the selector that are installed under the pistol grip. It is not necessary to remove the front or rear take down pivot pins, the magazine catch or the bolt catch.

3. Install TRIGGER (#13) in its standard orientation using the supplied stainless steel TRIGGER PIN (#15).

4. From the left side of the receiver, slide the AM15 SELECTOR (#17) through ONLY the LEFT SIDE of receiver. Do not yet push it all the way through the receiver. Slip the LINK (#18) over end of selector while both are inside the receiver, with the little end up and the long end mating with the pin sticking out of left side of the TRIGGER (#13). With the LINK (#18) captured by the SELECTOR (#17), push the selector though receiver and through right side into its standard installed orientation. Reinstall and tighten the pistol grip to capture the selector spring and detent.

5. Rotate the SELECTOR (#17) to the FIRE position. The SELECTOR (#17) MUST be in fire position to continue the installation.

6. Install the SEAR (#14) using the supplied stainless steel RECEIVER PIN (#16). The sear is correctly orientated with the little hole facing up and the long tail of the spring resting on the small notch in the SELECTOR (#17). The "C" shape of the left side of the SEAR (#14)r will hook under the small extension on the LINK (#18). When correctly installed, the LINK (#18) must be pinned against the left wall of the receiver fire control pocket by the tail of the spring.

7. Install the HAMMER (#12) and the HAMMER SPRING (#12) ensuring that spring tails are resting in the notches in the TRIGGER (#13). Cock the HAMMER (#12) until the HAMMER (#12) is captured under the top front lip of the SEAR (#14). The SEAR (#14) will hold the HAMMER (#12) back in the cocked position. When correctly installed, when you pull the TRIGGER (#12), the SEAR (#14) will rotate and pull the HAMMER (#12) down. Pulling the trigger WILL NOT release the hammer.

Once correctly installed and operation has been confirmed by the HAMMER (#12) being pulled down when the TRIGGER (#13) is pulled, the HAMMER (#12) will always stay connected to the SEAR (#14) even during firing. At no time should the HAMMER (#12) be disconnected from the SEAR (#14) and vertical in the traditional "fired" position.

Note that the Colt Light Machinegun fire control parts require an additional piece on the sear in order to operate with a .223 bolt in the open bolt configuration. The sear provided with the AM15 conversion kit has the holes in the correct positions to accommodate the additional sear piece but it is intentionally not included with the AM15 kit since the AM15 kit does not require the hammer to disconnect from the sear, which is accomplished by the additional sear piece.

You will NOT be able to use a .223 open bolt configuration bolt carrier with the supplied open bolt fire control parts.

 

CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

Your AM15 open bolt fire control parts are now installed and you can proceed with the installation of the AM15 Upper Receiver onto your M16 lower.

 

SECTION 4: AM15 UPPER RECEIVER ASSEMBLY

* CAUTION: Prior to assembling, first ensure that your M16 is not loaded.

*CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

* Carefully remove all parts from the shipping box. Do not remove them from the plastic packaging until ready to install each part.

UPPER RECEIVER ASSEMBLY:

1. Remove TOP COVER ASSEMBLY (#2) from UPPER RECEIVER (#1) by depressing detent on left front of receiver and simultaneously gently sliding TOP COVER (#2) forward and then lifting off. Only minimal force is required. Do not use any tools to pry the TOP COVER (#2) off.

2. With the TOP COVER (#2) off, remove the FEED BLOCK (#5) by gently lifting up on rear of the FEED BLOCK (#5) while gently pulling backwards. The FEED BLOCK (#5) can only be removed when the TOP COVER (#2) Assembly has first been removed.

3. Remove the BOLT (#6) by sliding it forward.

4. Place the NYLON BUFFER (#10) into the buffer tube against the face of the previously installed ADJUSTABLE BUFFER ASSEMBLY (#9).

5. Install the UPPER RECEIVER (#1) with BARREL (#3) and HANDGUARD ASSEMBLY (#4) already assembled, onto your M16 lower receiver. First push in the front receiver takedown pivot pin, then close the AM15 Upper Receiver on to the M16 lower and secure it with the rear receiver takedown pivot pin.

6. Place the OPERATING ROD (#7) into RECOIL SPRING (#8). With the AM15 Upper Receiver installed on your M16 lower receiver and both takedown pivot pins in place, install the rod end (not the spring end) of the spring and rod assembly through slot in rear of AM15 Upper Receiver, into the center of the NYLON BUFFER (10) and ensure that the end of the rod is captured in the detent in the face of the ADJUSTABLE BUFFER ASSEMBLY (#9).

7. Slide the BOLT (#3) onto the RECOIL SPRING (#8) and OPERATING ROD (#7) and reinstall the BOLT (#6) into the AM15 UPPER RECEIVER (#1) while compressing the SPRING (#8).

8. Reinstall the FEEDBLOCK (#5) in the reverse of the disassembly instructions above.

9. Reinstall the TOP COVER (#2). When installed on UPPER RECEIVER (#1), inspect the distance between the bottom of the TOP COVER (#2) and the FEEDBLOCK (#5). The TOP COVER (#2) should have minimal pressure on the FEEDBLOCK (#5) to keep the FEEDBLOCK (#5) securely in place. Correct tension by the TOP COVER (#2) on the FEEDBLOCK (#5) is accomplished by adjusting the set screws on the bottom of the TOPCOVER (#2) until they are snug on the FEEDBLOCK (#5) AND the TOPCOVER (#2) can still be easily removed and installed without damage to the TOPCOVER (#2) or requiring excessive force. Once the TOPCOVER (#2) screws are correctly adjusted for the FEEDBLOCK (#5), no additional adjustment should be necessary unless you install an alternate FEEDBLOCK (#5).

10. Retract the BOLT (#6)t using charging handle and verify that the bolt will lock back onto the HAMMER (#12), which is not acting as a traditional open bolt sear. If the BOLT (#6) does not lock in the rearward position due to occasional differences in buffer tube lengths, you will have to shorten the length of the ADJUSTABLE BUFFER ASSEMBLY (#9) by loosening the lock nut and screwing in the adjustment bolt to make the Adjustable Buffer Assembly shorter to enable the bolt to fully engage the sear. Make this adjustment in small increments of approximately one half of a turn of the bolt per adjustment.

Your AM15 Upper Receiver is now completely assembled. The actual assembly time once you are familiar with the process is less than three minutes thus making changes between your traditional M16 and your AM15 Upper Receiver easy to accomplish.

Prior to firing your AM15 Upper Receiver, you should read, understand and comply with all AM15 OPERATING INSTRUCTIONS, which are found on the same named tab on the product page at http://www.tacticalinc.com/am15-upper-receiver-p-420.html

 

 

 

 

 

 

 


AM15 UPPER RECEIVER
- DRUM LOADING & OPERATING INSTRUCTIONS

AM15 DRUM LOADING INSTRUCTIONS (return to top)
 
*CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

AM15 drums are easy to use once you understand how they work. Everyone that has ever owned an AM180 or an AM15, has at one time or another managed to dump a drum full of ammo on the ground but once you have a little practice with them, you will be all set and ready to load drums like a professional.

1. If you have a winder on the drum, first ensure that the winder does not have tension on it. This can be accomplished by moving the lock on the winder and SLOWLY letting the drum spin down until there is no tension on the winder by keeping pressure between the drum and baseplate. With no tension on the winder, remove the winder from the drum.

2. Turn the drum upside down. (You want the hole that the bullets go into and come out of, facing upwards.)

3. Hold the top part of the drum and manually rotate the baseplate until the feed slot is lined up with the blank groove in the drum. You'll know which one is the blank groove since its the only different looking slot.

4. While rotating the baseplate clockwise, continue to insert one round of .22LR ammunition into each cavity in the drum with the nose of the round pointing toward the center of the drum.

NOTE: The AM15 functions best with round nose high velocity .22LR ammo. For most reliable operation, avoid hollow point ammo. Hyper velocity and truncated bullet ammo should not be used.

5. Continue inserting individual rounds and rotating the baseplate until you have loaded 360 degrees all the way around without skipping any ammo cavity positions and you are once again back to the blank groove. At this point, the follower will elevate over the first round in the drum and you can continue to add additional ammo while turning the baseplate. Continue this process until each individual cavity on all available levels of the drum are filled.

NOTE: For your initial test firing and until you are familiar with the operation of the AM15 Upper Receiver, only fill the first layer regardless of the capacity of your drum.

6. Move the lever on your winder to "F" (free) and install it in the drum by pushing the legs of the winder all the way into the holes in the drum, ensuring that winder is securely captured by either the fingers on the plastic drum or the metal retainers on the Tactical Innovations Stainless Steel Base Plates.

7. Before winding the drum, you MUST capture the drum and the baseplate between your thumb and fingers with enough force to prevent the drum from spinning (or moving at all) on the baseplate as the winder is turned. For instance, your left hand will capture the drum against the baseplate while your right hand will wind (turn) the winder.

8. The spring tension on the winder is CRITICAL for the reliable operation of the AM15 Upper Receiver. The amount of tension drum via the spring is determined based on how many times you wind (turn) the winder. The number of times you will wind the winder is dependent on the size drum you are using and the number of layers of ammunition that you have in the drum.

The correct winding procedure is 2 1/2 turns PLUS and additional ONE turn for each full layer of ammunition in the drum. For example, the supplied 165 round drum will contain 3 layers of ammunition. Therefore, the winder should be turned 5 1/2 complete turns representing 2 1/2 initial turns and an additional 3 turns, one for each layer of ammunition.

9. Once the winder has been wound the correct number of turns, do not yet release your left hand grip between the drum and the baseplate or all of your ammo will be dumped from the drum by the winders turning force. While maintaining pressure, move the lever on the winder off of "F" and into the detent to lock the winder spring tension. Carefully release your left hand pressure between the baseplate and the drum and the drum should not rotate.

The drum is now ready to fire.

NOTE: Drums can be loaded and stored indefinitely and then simply add the winder and wind when you are ready to shoot. It is much nicer to load the drums before you go to the range.

AM15 OPERATING INSTRUCTIONS (return to top)
 
*CAUTION: If you are unfamiliar with the function and safe handling of an open bolt firearm, you should seek competent assistance, training and guidance before attempting to fire your AM15 Upper Receiver Conversion Kit.

Your AM15 Upper Receiver Assembly is tested and will run using a COLT FACTORY M16.  Due to the minor tolerance differences with other receivers, minimal fitting MAY BE REQUIRED.  However, it has been our experience after 100s of installations that the AM15 Upper Receiver will work as intended on most M16 lowers, regardless of manufacturer.  In the event you are unable to successfully get your AM15 Upper Receiver to work with your lower, we are happy to assist.  Assuming that the AM15 Upper Receiver has not be modified or damaged, we will once again testfire using a COLT FACTORY M16 lower receiver to verify successful function at no charge to the original purchaser.  Once operation is verified, we can adjust and fit the upper to your lower based on shop time at $60 / hr and test firing ammunition costs, generally totally $150 or less for both. 

AM15 UPPER RECEIVER OPERATION:

1. Make sure the gun is not loaded and is pointed in a safe direction.

2. Rotate the safety selector to the SAFE position.

3. Install the filled drum on the AM15 Upper Receiver by slipping the front tab under the lip on the barrel, ensuring that the drum is correctly centered and mated with the vertical pin.

The rear of the drum is correctly seated by sliding the rear tab of the drum through the corresponding slot in the top cover. Push down gently on the rear of the drum until the drum snaps under the mag catch. Firm pressure may be required but you should not strike the drum as damage to the drum might occur. Ensure that the drum is all the way down and that the MAG CATCH HAS RETURNED TO THE FORWARD POSITION before proceeding.

4. Move the lever on the winder to the "F" position to put tension on the drum. The drum is not forcing the ammunition against the feedblock and is unable to turn until the ammunition is allowed to feed through the feedblock during the firing sequence.

5. With the gun pointed in a safe direction and ensuring that your finger is OFF the trigger, retract the bolt using the charging handle to its full rearward travel position. Slowly and gently continue to use the charging handle to allow the bolt to move forward until it is catches in its rearward position.

6. With the bolt in the locked rearward position, return the charging handle to its fully forward position. The charging handle does not reciprocate with the bolt.

7. Rotate the safety selector to the FIRE position and the firearm is now ready to fire.

The firing sequence, which is identical to all other open bolt firearms, is as follows:

a. when the trigger is pulled, the bolt is released and travels forward under spring pressure and strips a round of ammunition from the feedblock and chambers it into the barrel chamber. The bolt does not have a separate moving firing pin but instead has a firing pin machined into the face of the bolt. The forward inertia of the bolt crushes the rim of the case and ignites the primer.

b. the force of the expanding powder propels the bullet down the barrel and the equal and opposite reaction blows the bolt back with the spent case pinned to the bolt face by the extractor until it strikes the ejector and is dropped out of the receiver through the M16's magwell.

c. the bolt continues its rearward travel until it contacts the bolt buffer, ending its rearward travel. The recoil spring then pushes the bolt forward to repeat the cycle. The firing cycle continues until either (1) the trigger is released and the sear (hammer) contacts the bolt to hold it in the rearward position or (2) the drum is empty and the gun runs out of ammunition or (3) a malfunction occurs such as a failure to feed, failure of the primer to ignite etc.

8. Once the drum is empty, it will "spin down". With your finger off the trigger and the firearm pointed in a safe direction, retract the bolt using the bolt handle and visually verify that there is not a round of ammunition in the chamber.

Operate the mag release and free the rear of the drum and then remove the drum from the front slot in the barrel.

CAUTION: THERE WILL ALWAYS BE ONE UNFIRED ROUND OF AMMUNITION LEFT IN THE TOP OF THE FEEDBLOCK WHEN THE DRUM IS EMPTY AND THE SPRING HAS WOUND DOWN. You must manually remove this last round after you remove the drum.

9. With the drum removed from the upper receiver, visually verify that there is no ammunition in (a) the chamber as well as (b) the feedblock.

NOTE 1: The higher capacity plastic drums (275 etc) will sometimes jam due to the plastic baseplate flexing due to the increased spring pressure required by the additional layers of ammunition. This will be evident when the lead bullet of the round that did not chamber is split on the feedblock rather than passing through the feedblock into the chamber. This situation can be remedied with the use of our replacement STAINLESS STEEL BASEPLATE ASSEMBLY.

  • Ample StockItem is in-stock at normal level
  • Low StockItem is in-stock but in limited quantity and is anticipated to be back-ordered and out of stock in the near future
  • Out of StockItem not available, the expected delivery date will be shown if available

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TACTICAL INNOVATIONS INC.
345 Sunrise Road
Bonners Ferry, ID 83805
208-267-1585 Pacific   Fax: 208-267-1597
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