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. This model is chambered in 9mm Luger and includes one 17-round magazine.