Arsenal SAM7R-62 7.62x39mm Semi-Automatic Rifle with AK-351 Muzzle Brake milled and forged receiver FM-922EUS FIME Group enhanced fire control group 16.3 chrome lined hammer forged barrel 14x1mm left-hand threads removable muzzle brake cleaning rod bayonet lug black polymer furniture intermediate length buttstock scope rail one 10 round magazine sling oil bottle and cleaning kit. – Caliber: 7.62 x 39 mm – Total length: 36.5 in. (927 mm) – Barrel length: 16.33 in. (415 mm) – Rifling: 4 grooves – Twist rate: 1:9.44 (1 in 240 mm) – Weight w/o magazine: 8 lbs (3.67 kg) – Muzzle velocity: 2329 fps (710 m/s) – Effective range: 437 yds (400 m) – Maximum range: 1480 yds (1350 m) – Rate of Fire: 40 rds/min (practical) – Receiver: Milled Receiver – Fire Control: FIME Enhanced Trigger – Front: 14x1mm LH Thread/AK-351 Muzzle Brake