Rock River Arms 18 Inch Varmint DLX EXT MID Upper

The Rock River Arms 18 Inch Varmint DLX EXT MID Upper features a Rock River Arms 18 inch stainless steel, cryo-treated, air gauged bull barrel chambered in .223 Wylde with a 1:8 twist, mid length gas system and a target crown muzzle.  Built on a Rock River Arms forged upper receiver with a RRA 11.25 inch mid length DLX Extended free float handguard and lo pro gas block.

The .223 Wylde chamber was designed as a match chambering for semi-automatic rifles. It will accomodate both .223 Rem and 5.56mm NATO ammunition. It is relieved in the case body to aid in extraction and features a shorter throat for improved accuracy.

Complete with RRA AR-15 bolt carrier group, forged charging handle and (3) 2” accessory rails.

These are built and test fired by PK Firearms, using Factory Rock River Arms parts.

FOR MORE INFORMATION ABOUT PK FIREARMS CUSTOM UPPERS PLEASE CLICK HERE