KRISS Vector SDP GEN II 9mm Luger 5.5in Black Nitride Modern Sporting Pistol - 40+1 Rounds - The KRISS Vector SDP is the ideal choice for personal protection and home defense. The short barrel and quick detach sling swivel make transportation simple, and it can be stowed away inconspicuously. Like all KRISS Vector firearms, the SDP is fed with full size Glock(R) magazines, offering cross compatibility of ammunition for a secondary or back up hand gun. Semi-Automatic Closed Bolt, Delayed Blowback 4140 Chrome Moly Threaded Barrel With Black Nitride (QPQ) Finish Quick Detatch Swing Swivel Glock Magazine Compatible 2-Stage, Quick Reset Trigger Low Profile Flip Sights