The SUB CQB is an innovative, integrally suppressed carbine designed for ultimate versatility and stealth. Unlike traditional suppressed firearms, this model features a folding design, allowing it to be compactly stored without sacrificing performance. It incorporates a unique rotating barrel shroud that enables the firearm to fold while an optic remains mounted. To achieve this, users simply lift the locking tab, rotate the hand guard 90 degrees, and fold the carbine, mimicking the standard SUB2000's folding process. The SUB CQB’s suppressor is integrated with the barrel, comprising 4.25" of rifling within a 16" baffled barrel, and is housed by a rotating hand guard and removable end cap, facilitating easy cleaning and maintenance. This design ensures the carbine remains “Hollywood quiet” when used with subsonic ammunition, making it highly effective for discreet operations. The carbine is equipped with integrated Picatinny rails for mounting accessories like lights and optics, enhancing its tactical utility. Despite its advanced features, the SUB CQB avoids the additional cost and paperwork of a short-barreled rifle, offering a cost-effective solution for personal defense with a low MSRP. This model provides superior pistol caliber firepower and compact storage, ideal for home defense and tactical applications.