Ithaca Mag-10

The Ithaca Mag-10 was the world's first 10 GA semi-automatic gas-operated shotgun chambered in 10-gauge (3½"). The CounterCoil system built into the front of the magazine tube reduced the recoil from the round to allow easier second shots but cut the magazine size in half to 2 shells. Regular models had jeweled-finish bolts, engraved barrels and checkered stocks. It was produced until 1989, at which point Remington Arms bought the design and used it as the basis for the Remington Model SP-10.