officially given to soldiers because of their rate of fire. But after firing six shots, the shooter had to take an excessive amount of time to reload. Also, on occasion Colt rifles discharged all their rounds at once, endangering the shooter. Even so, an early model was used in the Seminole Wars in 1838. During the Civil War a LeMat Carbine was made based on the LeMat revolver. Taurus manufactures a carbine variant of the Taurus Judge revolver along with its Australian partner company, Rossi known as the Taurus/Rossi Circuit Judge. It comes in the original combination chambering of .45 Long Colt and .410 bore, as well as the .44 Magnum chambering and dual-cylinder .22LR/.22WMR model. The rifle has small blast shields attached to the cylinder to protect the shooter from hot gases escaping between the cylinder and barrel. Shotguns Colt briefly manufactured several revolving shotguns that were met with mixed success. The Colt Model 1839 Shotgun was manufactured between 1839 and 1841. Later, the Colt Model 1855 Shotgun, based on the Model 1855 revolving rifle, was manufactured between 1860 and 1863. Because of their low production numbers and age they are among the rarest of all Colt firearms. The Armsel Striker was a modern take on the revolving shotgun that held 10 rounds of 12 Gauge ammunition in its cylinder. It was copied by Cobray as the Streetsweeper. As noted, the original Taurus/Rossi Circuit Judge is chambered to use both .45LC cartridges and .410 bore shells. However, it utilizes a rifled, rather than smooth-bore barrel. The MTs255 () is a shotgun fed by a 5-round internal revolving cylinder. It is produced by the TsKIB SOO, Central Design, and Research Bureau of Sporting and Hunting Arms. They are available in 12, 20, 28, and 32 gauges, and .410 bore. Other weapons The Hawk MM-1, Milkor MGL, RG-6, and RGP-40 are grenade launchers that use a revolver action. Because the cylinders are much more massive, they use a spring-wound mechanism to index the cylinder. Revolver cannons use a motor-driven revolver-like mechanism to fire medium caliber ammunition. Six gun A six gun is a revolver that holds six cartridges. The cylinder in a six gun is often called a "wheel", and the six gun is itself often called a "wheel gun". Although a "six gun" can refer to any six-chambered revolver, it is typically a reference to the Colt Single Action Army,