<p>RUK-9 Specifications Lower Receiver: Forged RRA LAR-9 Upper Receiver: 9mm Extruded Aluminum A4 Barrel: Chrome Lined 4.5-inch Chrome Moly, Full Auto Chamber, 1:10 Twist Muzzle Device: Smith Vortex Flash Suppressor Trigger: Single Stage Sights: RRA NSP Flip-up Front And Rear Sight Handguard: RRA Lightweight Aluminum Free Float Rail, 4.25 Inch Pistol Length, M-LOK Compatible Pistol Grip: Hogue Rubber Grip Arm Brace: SB Tactical SBA3 Adjustable Arm Brace Length: 22.25 Inches</p>
