Actual name: Thompson submachine gun. It is a .45 caliber weapon firing at about 600-900 rounds per minute. The normal size for the ammo in WWII was a 230 grain bullet. These were just plain full metal jacket bullets, not hollow points. You couold get a wide variety of magazines/drums for your thompson: You could get 20 or 30 rounds stick magazines, and you could also get 50, 75, or 100 round drums. Many poeople loved these drums even though they made the Thompson about 7 pounds heavier, for a grand total of almost 17 pounds. To just look at the weapon, you wouldn't think it could weight that much, but it's just a big chunk of steal. This also helped with recoil.