.177 H&K USP Semi-Auto Tactical CO2 BB pistol

30-Day Limited Warranty CO2-powered Uses one 12-gram CO2 cartridge Shoots steel BBs 22-shot removable BB mag also holds CO2 cartridge Double-action only Fixed front and rear sights Integrated Weaver accessory rail under the barrel (no slots) Realistic hammer movement Specifications: Loudness: 3-Medium Weight: 1.35 lbs Barrel Length: 4.00″ Overall Length: 7.50″ Capacity: 22 round(s) Barrel: Smooth bore Action: Semiautomatic