This Airgun is an exact replica Glock 17 Gen3. The pistol runs on a 12 gram CO2 cartridge. Its features include an 18 round .177 Steel BB drop free magazine, Realistic Half-Blowback action, and fires at 365 FPS. This is an officially licensed product of GLOCK, it will fit in any holster that fits the real Glock 17 Gen3, making it perfect for holster drills and target practice.