Hi Blaine, the IWI Tavor TS12 Ga is made in Israel by IWI and Imported into the U.S.A. The TS12 loads its shells into three magazine tubes, each of which contain a total of five shells, allowing for a maximum of 15 + 1 shells. The tubes can be rotated via a button on the pistol grip. Each 5rd Tube must be manually activated independently and not automatically to be importable. The switch in front of the trigger releases the magazine tubes to rotate. After you cycle through the first six rounds (one in the chamber and five in the tube), the bolt locks back automatically. Press the release and manually rotate the magazine tube assembly one-third of a rotation and the bolt drops on the fresh tube of its own accord. You then have another five rounds at your fingertips. Once that tube runs dry, repeat the process a second time for a final five rounds. Rotating the tubes is an intuitive process that takes about as much thought as cycling a pump-action scattergun. Since the bolt drops by itself, you can run through all 16 rounds in a shockingly short period of time. Cheers and stay safe!