(UG4130103MOS) This is a new Glock Model 41 Generation 4 MOS semi-automatic pistol chambered in 45 acp. This DAO pistol features a 5.31" barrel, 13+1 capacity, black polymer frame with interchangeable backstraps, black steel slide, adjustable sights with MOS cuts, and a weight of 36.16 ounces. This pistol comes packaged with 2 magazines, mag loader, cleaning set, pistol case, backstrap set and cable lock. This practical/tactical pistol has a longer barrel and slide to help reduce muzzle flip and felt recoil. The MOS simplifies the mounting of popular optics. It comes packaged with four plate options. MOS gives you the option of adding tall iron sights allowing the optic and the iron sights to co-witness.