The SUB-2000 feeds from a grip-located magazine well using magazines designed for various pistols, and is an inexpensive carbine. The distinguishing characteristic of this rifle is that it folds in half for storage and transportation, and its extreme slim shape compared to other rifles. The other interesting fact about this weapon is that it accepts high-capacity magazines from popular semi-automatic handguns, such as the Glock. The main advantages of a carbine in a pistol caliber over a handgun include the increased sight radius which aids with accurate shooting; the long barrel more efficiently captures burning powder which increases projectile velocity; and more points of contact between the shooter and weapon which increases stability.