Colt Defender BB pistol Looks & feels like the Colt Defender compact 1911 firearm Uses 12-gram CO2 cartridges (fits in the grip) Built-in 16-shot BB magazine Fixed front & rear sights All-metal construction Double-action only Accessory rail under the barrel Unique grip release to access CO2 cartridge ... Colt Defender CO2 BB pistol, 1911 compact, 16-shot mag...