The lightest form factor of the Vector family the KRISS Vector Gen 3 SDP is the ideal choice for personal protection and home defense. The upper and lower housings have been completely redesigned for customizability and increased hand support. – The SDP is fed with full size Glock® magazines ensuring seamless interchangeability for users familiar with Glock-style mag. – Features – Interchangeable AR15 / M16 Pistol Grip – Interchange Ambidextrous Magazine Release – Rear Picatinny Rail Stock Mount – Skeletonized Trigger with 0.7mm Pre-Travel – Ambidextrous Short Throw Safety Lever – Gen 3 Low Profile Upper Housing – Gen 3 Bolt Release and Mounting Block – Full Length MIL-STD 1913 Picatinny Top Rail – Short Charging Handle / Brass Check Function – 4-Pin Tool-Less Disassembly – Caliber 9X19 – Model Vector SDP – Action Semi-Automatic – Operating System Closed Bolt Delayed Blowback – Barrel Length 5.5 in / 139.7 mm – Overall Length Collapsed 15.35 in / 390 mm – Magazine(s) included (1) 40 Rounds – Color Black – Weight 5.6lbs / 2.5 kg – Barrel Material 4140 Chrome Moly – Barrel Finish Black Nitride (QPQ) – Barrel Threading 1/2 x 28 RH – Trigger Type Pivoting Single Stage