Frequently Asked Questions For

UPPER RECEIVER TENSIONING SCREW FOR AR15 RECEIVER

1. What thread pitch are the screws?
2. What size drill bit should be used to drill the hole?
3. Can any AR15 lower be drilled to accept the upper receiver tensioning screw?
4. Can I send my receivers to Tactical Innovations to have the receivers drilled for the upper receiver tensioning screw?

1. What thread pitch are the screws?

   The screws are 1/4-28 TPI.

2. What size drill bit should be used to drill the hole?

   The 1/4-28 NF threads require a #3 drill bit.

3. Can any AR15 lower be drilled to accept the upper receiver tensioning screw?

   We have not yet found a forged receiver that will not work. Billet receivers should work but due to the artistic liberties that are taken in the machining process for billet receivers, we have no way to guarantee that all can be upgraded.

4. Can I send my receivers to Tactical Innovations to have the receivers drilled for the upper receiver tensioning screw?

   Sorry, we don't do any custom work and would not be able to retrofit receivers.