A 50th Anniversary highly decorated version was introduced in 2013.
Both the Sportsman Auto and the Pump were discontinued in 1987, concurrent with the introduction of the Remington 11-87 semi auto and the 870 Express pump model.
The Model 1100 bleeds off gasses to operate the action through ports in the barrel near the end of the fore end.
The gasses then drive a steel action sleeve that fits around the magazine tube and connects to the bolt carrier to the rear, ejecting the spent shell.
The Remington 1100 is a gas-operated semi-automatic shotgun, popular among sportsmen.
The Remington 1100 was the first semiautomatic shotgun to feature significant improvements in felt recoil, weight and reliability.
the Remington Model 1100 was introduced in 1963 as a successor to the Model 58 and 878 gas operated shotguns.The Model 58s had supplanted the recoil operated Model 11-48, which retained the long recoil action of John Browning's original design, present in the Remington Model 11 and the Auto-5.All models of the 1100 are gas operated with a mechanism that noticeably reduces recoil. The Model 1100 holds the record for the most shells fired out of an autoloading shotgun without malfunction, cleaning or parts breakage with a record of over 24,000 rounds.Several variations of the Model 1100, in 12, 20, and 28 gauges, and .410 bore are still in production as of 2016. The record was set in 1978 with a Remington model 1100 LT-20.The Remington Model 1100 ushered in the era of successful and reliable gas-actuated autoloading shotguns, and, as of 1983, it was the best selling autoloading shotgun in U. Breaking this record has been attempted with several other models of semi-auto shotguns but has yet to be broken.In 2011 Remington introduced the Model 1100 Competition Synthetic.