The SUB-SDP "Nub Sub" distills the iconic folding-carbine platform into pistol form, delivering the most compact configuration the SUB2000 has ever taken. An integrated pistol stabilizing brace transforms shootability without sacrificing the platform's signature compactness. The handguard also includes a 1913 Picatinny accessory rail for mounting optics along with M-LOK accessory slots and a threaded barrel to allow for a wide degree of customization. Specifications and Features: Action: BLOWBACK Barrel Length: 6" BARREL Caliber: 9MM LUGER (9X19 PARA) Capacity: 15 ROUNDS Finish: BLACK Muzzle Type: THREADED Optic Mount: 1913 PICATINNY Sights: OPTIC READY Thread Pattern: 1/2X28 TPI Weight: 3.57 LBS