Product Description
Bcm Mk2 Receiver Extension For Your Ar15, M16, M4. Machined From 7075t6 And Manufactured To Mil-spec Dimensions And Specifications. Mil-spec Receiver Extensions Have A Slightly Smaller Dimension Where The Stock Slides On. *note* These Buffer Tubes Require A Rifle Action Spring And Specific Bcm Mk2 Buffer, Carbine And Rifle Buffers Will Not Work.features :
- fits Ar
- 8 Position
- can Reduce Felt Recoil
- requires Proprietary Buffer Weight
