FN 66-100818 66100818: The FN 509 Compact represents the next evolution in personal protection with the performance of a full-sized pistol in a concealable size. With low-profile, snag-free sights, it's the right addition for everyday carry and the perfect fit for in-the-waist holsters. The pistol is 9mm and striker-fired with 3.7-inch barrel, standard 12+1 and 15+1 capacity and the capability to accept all higher capacity FN 509 magazines. The improved controls aid in manipulation, the new improved texturing on the two included backstraps provides better recoil management, and a new flatter-faced trigger enhances trigger control with a cleaner break.