Arsenal Inc. Sbr Slr-104Ur 8.5 5.45X39 Metal Fold QR

SLR-104UR SBR - 5.45x39.5mm caliber Stamped receiver short gas system front sight block / gas block combination chrome lined hammer forged Short Barrel cleaning rod black polymer furniture stainless steel heat shield left-side folding Metal stock 2 stage trigger and scope rail. - The PR-03 Picatinny Quad Rail Handguard System was designed and manufactured to meet and exceed the following stringent military requirements: - Ability to accept cleaning rod with the rail system installed achieved with stainless steel internal guide rail - To easily align the rail system with both milled and stamped receivers achieved with a pair of precision machined tabs - Ability to constrain debris from entering into the receiver from under-rail openings achieved with sealing caps of the rail system - Minimize weight while providing maximum strength achieved with the triangular support design and utilizing aircraft grade durable aluminum material - Providing the maximum number of rails achieved with optimum design with 14 rails on the bottom and the sides and 9 rails on the top - Identification marks for repeat attachment of devices achieved with clearly marked numbering system on all 4 sides - Provide comfortable grip to the shooter achieved with compact system profile and smooth finish - caliber: 5.45 x 39.5 mm - total length: 733 mm (28 7/8 in.) - folded length: 492 mm (19 3/8 in.) - barrel length: 216 mm (8 1/2 in.) - rifling: 4 grooves - twist rate: 1 in 200 mm (7.87 in.) - weight w/o magazine: 2.79 kg (6.1 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)