The KRISS Vector Gen II SDP (Special Duty Pistol) is the Non-NFA semi-automatic pistol variant of the KRISS Vector platform. Although it may be small, it still has the same capabilities as its larger counterparts, and is civilian legal in most states. It has an ambidextrous short throw safety lever, and a smooth trigger with an audible and tactile reset. The frame is constructed with advanced polymer composite material, and has a full length mil-std 1913 Picatinny top rail with a mil-std 1913 Picatinny bottom rail. The Vector SDP includes adjustable low-profile front and rear folding sights, and features a 5.5" threaded barrel with a nitride QPQ finish. SDP SB models feature the KRISS Vector Pistol Arm Brace by SB Tactical. This SDP SB model in 45 ACP is compatible with Glock G21 magazines, and has M16x1 LH muzzle threads. It has a black arm brace, frame and metal finish, and includes a 13-round magazine.