ASG CZ Shadow 2 CO2 BB Pistol .177 caliber CO2 18-round capacity Blowback Under-muzzle accessory rail Full metal Metal slide Travel-adjustable trigger Unique adjustable hop up Double action Windage and elevation adjustable rear sight Fiber optic front sight Fully textured and checkered grip Individual serial number Max. velocity: 285 FPS Uses one 12-gram CO2 cartridge Barrel length: 3.7" Overall length: 8.5" Weight: 2.7 lbs.