This Kriss Vector SDP is chambered in the hard hitting 10mm. Takes Glock Magazines, one 16 round included, though the longer ones are available. 5.5" threaded barrel. Slings are available for these, which makes them more controllable and fun to shoot. Bore is very, very good. 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® magazines, offering cross compatibility of ammunition for a secondary or back up hand gun.