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A Remington 870 12 gauge with sighted cylinder bore barrel suitable for Foster slugs and buckshot. The "Foster slug", invented by Karl M. Foster in 1931, and patented in 1947 (U.S. patent 2,414,863), is a type of shotgun slug designed to be fired through a smoothbore shotgun barrel, even though it commonly labeled as a "rifled" slug. A rifled ...
The United States Navy included rifled slug cartridges among 21st-century loads. Slugs from these 2.75 in (7.0 cm) cartridges have a muzzle velocity between 1,590 ft (480 m) and 1,770 ft (540 m) per second.
Twelve gauge stocks will also interchange on the older 12-gauge-sized 20-gauge receivers, although modification is needed to fit the smaller sized 20-gauge receivers employed since the late 1970s. Several parts of the 870, such as buttstocks and magazine tubes, will interchange with the semi-automatic Remington 1100 and 11–87 .
The Model 11-87 is a gas operated semi-automatic shotgun.Upon firing a shell, some of the high-pressure gases from the burning propellant are diverted through two small holes under the barrel, [2] forcing the bolt toward the buttstock, which in turn ejects the spent shell.
The Model 58 was produced in several version and grades, including a magnum version which could accept 3-inch (7.6 cm) shells, and versions with rifle sights ("Rifled Slug Specials"). [3] The Model 878 was introduced in 1959 with an improved "self-adjusting" gas system, offered in 12 gauge only. [4]
12 gauge: This armor would protect against five hits, fired from 5 meters, of: 35 g (540 gr) 12 gauge lead-core "Hunter" shotshells at a velocity of 390–410 m/s (1279–1345 ft/s) Class 3 5.45×39mm 7.62×39mm: This armor would protect against three hits, fired from 5.10 meters, of:
The Ultra slug barrel is a "Heavy" barrel. It is about 1/8" thick all the way around and the added weight helps tremendously with recoil. There is also a bar in the stock that helps with recoil. It is extremely accurate with the aforementioned sabot slugs due to the extremely high velocity and aerodynamic stability of the slugs.
The Serbu Super-Shorty is a compact, stockless, pump action shotgun chambered in 12-gauge (2 + 3 ⁄ 4 and 3"). [1] The basic architecture of most of the production models is based on the Mossberg Maverick 88 shotgun, with Mossberg 500 and Remington 870 receivers also available. [2] [3] The shotgun features a spring-loaded, folding foregrip. [4]