The Kriss Vector Gen II SDP features a Super V Recoil Mitigation System that uses an innovative nonlinear operating system that revectors energy down and away from the shooter's shoulder to dramatically reduce felt recoil and muzzle climb. This system allows the shooter to recover faster, for quicker and more accurate sequential shots. An extremely low bore axis compliments the Kriss Super V Recoil Mitigation System by aligning the barrel with the user's arm. This allows the user's body to work together with the Kriss Super V System for maximum control. Toolless disassembly lets users quickly change between caliber lower receivers in a matter of seconds. The Vector SDP-SB comes with a standard threaded muzzle and is designed to use the reliable and ubiquitous standard Glock magazines.