Our basic rifle the Mk4LE is available in 5.56x45mm 300 AAC BLK 9mm Luger and 22LR. They all feature a nitrided 16.1? 4140 CrMo steel barrel in a M4 profile except the 300 BLK as it features a M300 multi-role barrel profile. The standard configuration includes a F marked front sight base and a MBUS rear sight. - Action: Semi Auto - Caliber: 9mm - Capacity: 25 - Stock: M4 6-Position - Finish: Black - Twist: 1:10 - Barrel Length: 16 - Overall Length: 32 - Weight: 6.2 lb
Determined at checkout.