Ar-15 M4-76 Complete Upper Receiver Assembly - Ar-15 M4-76 Upper Receiver 5.56 16'''' M-Lok Black

Sons of Liberty Gun Works and Brownells have teamed up to bring you this rugged and ready AR-15 16" M4-76 Upper Receiver The M4-76 upper receiver has a 16" barrel made from 4150 chrome moly vanadium that has been high pressure tested and magnetic particle tested. The barrel has a Mid-Length gas system, a 1-7 rate of twist, and a muzzle threaded A 1/2-28. The M4-76 upper receiver uses the 15" SOLGW M76 Wedge Lock Rail which accepts M-LOK attachments and features a steel barrel nut. The M4-76 16" Upper Receiver comes to you without a bolt carrier group, charging handle, or muzzle device knowing that for many customers these are some of the most s Mfg: Sons Of Liberty Gun Works