1/2x28 FEMALE TO 1/2x20 MALE


If you have some .22 firearms that are factory threaded 1/2 x 28 male, this adapter will allow you to muzzle accessories and suppressors that are threaded 1/2-20. 

The adapters are knurled on the OD for easy on and off threading. They are hot salt blued steel and are manufactured to exacting tolerances on CNC turning centers in one operation to insure exact alignment of the OD and ID threads.  A thread adapter is also included with the adapter to keep your threads in good shape when no using your suppressor.  Get the most use out of your suppressors with our adapter!

We want to make sure that you get the correct adapter.  Please verify that you want 1/2-28 female to 1/2-20 male.  This will take a firearm that is threaded 1/2-28 and convert it to 1/2-20 for use with 1/2-20 suppressors and accessories.  Most USA suppressors and accessories are 1/2-28 so if you have a firearm that is threaded 1/2-20 and you want to convert it to 1/2-28, then you do not want this adapter.  You would instead us part # 00243.  If you have a suppressor that is 1/2-20 and you want to use it on a firearm that is threaded 1/2-28, then this is the adapter that you want.

  • PRODUCT NAME THREAD ADAPTER, 1/2x28 tpi TO 1/2x20 tpi With Thread Protector
  • Manufacturer Tactical Innovations Inc.
  • Application Any 1/2x28 TPI Male Barrel To Convert It To 1/2x20 tpi Male
  • ID Female Thread 1/2x28 TPI
  • OD Male Thread 1/2x20 TPI
  • Material Steel
  • Finish Hot Salt Blued
  • Weight 1 Ounce
  • Packaging Individually Packaged for Retail Sale

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PROP 65 WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to