For easy concealment, the shortest SP9 A3S version is available, measuring just 12.44 inches with the stock folded (without a muzzle device). All internal parts have been designed for reliable function even with a short barrel. The SP9 A3S is equipped with a threaded barrel with a protective end cap, utilizing a 1/2X28 thread pitch. An FRN folding stock can be replaced by an end cap to further increase concealability. Despite its small size, Grand Power managed to retain ample accessory rail space at the 12 and 6 o'clock positions, as well as M-LOK slots at the 3 and 9 o'clock. This allows the user to mount red dots, lights, lasers, grips, and other accessories they may want.