- M4 feed ramps
- Carbine length gas system
- 0.750″ Gas block diameter
- Barrel dimpled for gas block
This Bear Creek Arsenal AR-15 A3 Carbine has a 16″ M4 contour barrel made of 4150 chrome moly vanadium steel with a parkerized finish, a 1:8 twist rate and a carbine gas system.
The assembly includes a 15.25″ MLOK rail, an m4 flat top forged upper receiver with forward assist, a bolt carrier group, a flash hider, a charging handle, and a complete lower assembly.