The KRISS Vector SBR Enhanced is the most versatile version of the Vector SBR. The addition of the MK5 Modular Rail provides more Picatinny rail space for accessories. At the rear of the receiver sits the KRISS Ambidextrous Folding Stock, which cuts the overall length of the Vector SBR Enhanced by more than nine inches when folded. At the heart of the Vector SBR Enhanced is the Super V System, a nonlinear, multilink, blowback system designed to redirect recoil energy downward. The Super V System, in conjunction with the low bore axis, reduces felt recoil and muzzle climb. Like all KRISS Vector firearms, the SBR Enhanced is fed with full-size Glock magazines, offering cross-compatibility of ammunition for a secondary or backup handgun.