The Glock 17 Gen 5 MOS BB pistol by Umarex brings the latest in Glock design evolution to the airgun range, and this bundle takes it a step further with an included RDS8 red dot optic ready to mount. Powered by a single 12g CO2 cartridge housed in the 18-shot drop-free magazine, it pushes BBs downrange at up to 380 FPS with realistic blowback action. The MOS (Modular Optic System) slide accepts nearly any micro pistol optic, and the integrated accessory rail forward of the trigger guard accommodates a light or laser. An officially licensed 1:1 Glock replica, it's a capable trainer or backyard plinker that mirrors the real platform in feel and handling. .177 caliber BB CO2 powered - single 12g cartridge (not included) 380 FPS muzzle velocity MOS (Modular Optic System) slide with included Umarex RDS8 red dot optic 18-shot drop-free magazine with blowback action Integrated accessory rail for light or laser CO2 loading tool included Officially licensed 1:1 Glock replica Gen 5 design features throughout