AR-STONER AR-15 Pistol Upper Receiver Assembly 5.56mm NATO 7.5″ Parkerized M4 Barrel 6.5″ M-LOK Ultralight Handguard
This BCA AR-15 complete 5.56 Nato pistol length upper has a 7.5″ M4 contour barrel with a parkerized finish, and features a 1:7 twist rate, with a pistol length gas system. It includes a 6.5″ MLOK rail, an M4 flat-top upper receiver, a BCA bolt carrier group, a flash hider, and a rear charging handle. This 5.56 Nato upper is compatible with any mil-spec AR-15 lower.
Features
- Rear charging handle
- M4 contour and feedramp
- 4150 chrome moly vanadium barrel