Umarex T.A.C. pistol & carbine Uses 12-gram CO2 cartridges 19rd BB magazine Semiauto Fixed front sight Windage-adjustable rear sight Double-action only Manual safety 4 Weaver/Picatinny rails Removable forward grip (attaches to one of the rails Folding stock 14 to 22.50 overall length ... 4 rails, 19rd BB magazine, semiauto pistol/carbine...