The Kriss Vector CRB is the non-NFA, semi-automatic, carbine variant with a 16" barrel. Additional standard equipment on the KRISS Vector CRB are the flip sights, full-length Picatinny top rail, lower Picatinny accessory rail, and a Glock magazine. This 45mm model CRB has a maglock for CA compliance. Features: Patented Kriss Super V recoil mitigation systemSmooth trigger with audible and tactile resetAmbidextrous short throw safety leverMil-std 1913 Picatinny bottom railKriss vector enhanced barrel shroud4-pin toolless disassemblyGlock magazine compatibleToolless caliber interchangeabilityFull-length Mil-std1913 Picatinny top railLow profile folding sightsKriss M4 stock adaptor with defiance M4 stock