Rock River Arms - 18" Fluted CMV - Troy 11" SDMR

The Rock River Arms - 18" Fluted CMV - Troy 11" SDMR complete upper features a Rock River Arms 18" Fluted CMV barrel with NO Chrome Lining, in 5.56 NATO, 1/9 twist, Mid-length gas system, 1/2x28 threaded muzzle.  Built on a Rock River Arms Forged upper receiver using milspec parts with a Troy 11" SDMR Keymod free floating rail, lo-pro gas block and an A2 Flash Hider. 

These are assembled and test fired by PK Firearms.

Complete with AR-15 bolt carrier group and forged charging handle.

FOR MORE INFORMATION ABOUT PK FIREARMS CUSTOM UPPERS PLEASE CLICK HERE