FEATURES: -Black -16" barrel -38.5" (extended) / 35.25" (collapsed) -Advanced metal components -Patented KRISS Super V Recoil Mitigation System -Toolless caliber interchangeability -Glock magazine compatible -Full-length MIL-STD 1913 Picatinny top rail -MIL-STD 1913 Picatinny bottom rail -Low-profile folding sights -16" black anodized shroud -KRISS M4 stock adaptor with DEFIANCE M4 stock -Smooth pivoting trigger with audible & tactile reset -Ambidextrous short throw safety lever -4-pin toolless disassembly -Charging handle/brass check function -17 round magazine