Just keep pulling the double-action trigger, unload the mag, reload, repeat. Thats the cycle of fun with a semi-auto BB gun like the Umarex TDP. This well-priced BB pistol is great for shooting cans or knocking down objects. It has a 19 round drop-free metal magazine and fires as fast as you can pull the trigger. Experience the fun and action of shooting semiauto handguns with the Umarex T.D.P. 45 and enjoy popping targets at a fraction of the cost firing a live-fire gun. Not only will you save a bundle on ammo, reloading the magazine will be a cinch, especially if you buy an Umarex BB speedloader! Similar to the 2254822 TDP45.