Extended design holds up to 42 rounds Standard version only holds about 15 rounds Compatible with Elite Force Beretta M9 and M92 Fits and feeds perfectly when shooting in semi-automatic and full-automatic Uses standard 12g CO2 cartridges In the Box 1X Magazine Specifications: Brand Elite ForceMagazine Capacity 42 RoundsPropellant CO2Compatibility Elite Force M9 and M92 CO2 Airsoft PistolsColor Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov