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The military also lists an aluminum .410 3-inch (76 mm) shell, with a rifle primer, as standard issue under the ammunition inventory name M-35. The civilian version Springfield Armory M6 Scout has a .22 rimfire or .22 Hornet over a .410 bore shotgun barrel. The original M6 has a 14-inch (360 mm) barrel, the same length as the stock, and folds ...
Aircrew were instructed to wrap the barrels with parachute cord as a field expedient fore-stock. [4] [5] The Scout has a rifle barrel mounted above a .410 shotgun barrel, this is known as a superposed "over-under" design. Its upper rifle barrel is chambered for .22 Long Rifle or .22 Magnum, in addition to the .22 Hornet used by the USAF M6. [6]
The M6 was a superposed ("over-under") combination gun, with a .22 Hornet rifle barrel located above the .410 bore shotgun barrel. It has 14-inch barrels and folds in half to a minimum size of 15 inches. [5] A storage compartment in the stock held nine rounds of .22 Hornet ammunition with four shotgun shells. [6]
[8] [better source needed] The Model 42's barrels are 20 inches long, and the upper barrel fires .22 LR or .22 Magnum, while the lower barrel fires .410 gauge shells. [5] It features black plastic furniture and the adjustable rifle sights can be removed to install a scope base. In 2016, Savage Arms introduced the Model 42 "Takedown" model which ...
The MA-1 was intended to replace the M4 Survival Rifle and the M6 Aircrew Survival Weapon which was a superposed ("over-under") twin-barrel rifle/shotgun chambered in .22 Hornet and .410 bore, using a break-open action. The AR-5 had the advantage of repeat fire over the then-standard M6, using the same .22 Hornet cartridge.
If the rifled barrels differed in caliber, generally the layout would be an over/under using the shotgun and a centerfire rifle barrel, with a rimfire rifle barrel mounted between and to one side. These configurations, with shotgun/centerfire/rimfire barrels, are the most desirable configuration for modern collectors.
The over and under barrels are 20" long. The top barrel fires .22 LR or .22 WMR rimfire ammunition, while the bottom barrel fires .410 bore shotgun shells. The lower barrel is chambered for 3" shells, allowing the use of both 3" and 2.5" birdshot, buckshot, slugs, and self-defense rounds. The rifle barrel on top has open sights. [30]
Barrett claims that this cartridge is capable of propelling a 398 gr solid brass boattail spitzer bullet out of the 32-inch (810 mm) barrel of a Model 99 single-shot rifle at 960 m/s (3,150 ft/s), giving it a ballistic coefficient of .720, and keeping the projectile supersonic out to 1,737 meters (1,900 yards, ~1.2 miles). [citation needed]