The BT9 R9 Competition carbine from Rock River Arms (RRA) is a 9 mm Luger-chambered semi-automatic based loosely on the AR-15 design. Growing interest in pistol-caliber carbines has resulted in Rock River Arms’ latest offering. A two-part receiver set enhances the functionality of the platform and allows shooters to customize with aftermarket AR-15-style parts and accessories. Smartly, RRA devised its lower receiver for use with popular 9 mm magazine pattern from Glock.
A 16” chrome-moly steel barrel come standard on the BT9 R9, which is threaded and includes RRA’s 9 mm Mini Brake. Covering most of the barrel is a 15” RRA lighweight handguard that features M-Lok slots for accessories. The aluminum handguard is fitted to the company’s extruded aluminum receiver with Picatinny rail covering the top side for easily attaching optics. RRA includes its Operator CAR stock, which is six-position adjustable as well as a rubber grip from Hogue.
Our experience at the range proved the BT9 R9 Competition to be a smooth-shooting carbine. RRA’s two-stage trigger broke crisply and reset quickly. The gun’s 6.8-lb. weight combined with its pistol-caliber chambering and the addition of a Mini Brake at the muzzle allowed for fast and accurate follow-up shots on target.
Watch our NRA Gun of the Week video, above, to learn more about the Rock River Arms BT9 R9 Competition carbine.
Rock River Arms BT9 R9 Competition Specifications Manufacturer: Rock River Arms ActionType: blowback-operated semi-automatic rifle Chambering: 9 mm Luger UpperReceiver: extruded aluminum LowerReceiver: machined aluminum Barrel: 16"chrome-moly steel Trigger: two-stage; 4-lb., 7-oz. pull Stock: six-position adjustable Weight: 6 lbs., 12 ozs. empty MSRP: $1,275