Rock River Arms BT3 X-Series, Semi-automatic, AR, 308 Winchester, 18" Flutted Barrel, 1:10 Twist, Hunter Muzzle Brake, Low-Pro Gas Block, Mid-Length Gas System, Hogue Rubber Grip, 6-Position Operator CAR Stock, 17" Lightweight Free Float M-LOK Handguard, Black, 20 Rounds, Two Stage Ultra Match Trigger, 1 Magazine XBT31751B
