The GLOCK 17L Gen5 is a high-performance pistol with a long barrel, balanced slide, large sight radius and lighter trigger. It was specifically developed for competition and offers reliable precision. The G17L Gen5 features MOS technology , which allows effortless mounting of optical sights to make aiming even faster. The barrel is an impressive 153 mm long. The model is available in 9 mm Parabellum caliber and features the proven Safe Action system and a 17-round magazine . If you are looking for more technical details, you can find all the information about the huge GLOCK 17L Gen5 on the GLOCK website .