This SLR-104UR rifle is an Arsenal Inc. exclusive limited production item. We've created this custom configuration by combining a factory SLR-104UR SBR with the NEW Arsenal Gambit barrel extension! THIS IS NOT AN SBR! - The Arsenal SLR-104UR rifle chambered in 5.45x39mm utilizes a short gas system and features a Bulgarian stamped receiver. This limited edition features the ALL NEW Gambit - which is a barrel extension featuring an aggressive profile and serves as a flash hider/muzzle brake. Chrome lined and made of hardened steel the ALL NEW Gambit enhances your shooting experience by providing reduced recoil and muzzle rise. - The furniture consists of a Soviet style pistol grip and left-side folding stock with a cleaning kit compartment. The stock also features a button that engages the front latch assembly ensuring rapid deployment. - The SLR104UR is constructed of all new manufactured parts made in both Bulgaria and the U.S. This firearm is fully compliant with Title 18 USC Section 922(r) parts-source restrictions. - Ships with one 30 round magazine. - SPECIFICATIONS - Caliber: 5.45 x 39.5 mm - Features the ALL NEW Gambit barrel extension - Total Length: 811 mm (31.9 in.) - Folded Length: 640 mm (25.2 in.) - Barrel Length: 411 mm (16.2 in.) - Rifling: 4 grooves - Twist Rate: 1 in 200 mm (7.87 in.) - Weight without Magazine: 3.17 kg (6.9 lbs.) - Muzzle Velocity: 900 m/s (2953 fps) - Effective Range: 500 m (547 yds) - Maximum Range: 1350 m (1480 yds) - Rear Sight Range: 500 m (547 yds)