The KRISS USA Vector SDP G2 is a semi automatic pistol version of the KRISS Vector sub-machine gun. This self-defense pistol uses standard Glock magazines and features a threaded barrel for use with a suppressor or other muzzle device. It is equipped with folding sights along with a full length Picatinny top rail for addition of optics. A lower Picatinny rail permits adding accessories such as a laser or tactical light. The G2 version adds improvements such as tool-free caliber interchangeability and 4 pin tool-free disassembly.