Colt Commander pistol Uses 12-gram CO2 cartridges Blowback 18-rd drop-free BB mag* Semiauto Single-action Fixed front and rear sights Skeleton trigger and hammer Ambidextrous, textured grip Manual safety Functioning grip safety Slide stays open when last BB is shot All metal *The manual states the magazine holds 18 steel BBs. However, you may be able to load 19.