This new Glock 35 Gen 4 pistol fires the .40S&W round. It has a 5.25" barrel with an overall black finish. This semi-auto pistol features adjustable rear sights, an extended slide stop lever, replaceable back-straps, an under barrel rail, and the modular optic sytem(MOD). This MOD system gives you 4 different plate options. These are: #1 Eotech/Doctor/Insight/Meopta #2 Trijicon RMR #3 C-More #4 Leupold Delta Point. This cool pistol comes with a hard case, lock, bore brush & rod, magazine loader and three 15 round magazines.