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A pump action rifle is a rifle where the forend can be moved forward and backward in order to eject a spent round of ammunition and to chamber a new one. Pump-action mechanisms are often regarded as faster than a bolt action and somewhat faster than a lever action, as it does not require the trigger hand to be removed from the trigger while reloading.
The Girandoni air rifle is an air gun designed by Italian inventor Bartolomeo Girandoni circa 1779. The weapon was also known as the Windbüchse ("wind rifle" in German ). One of the rifle's more famous associations is its use on the Lewis and Clark Expedition to explore and map the Louisiana Purchase of 1803.
More powerful is the pump system, which is a slightly more complex version of the single stroke design. Rather than leaving the air in the piston when compressed, the pump airgun has a reservoir to contain the compressed air, allowing multiple pumps to be used, typically 2 at a minimum, up to 10 pumps for full power.
The BSA Mercury was a break barrel, spring powered, Air Rifle first produced in 1972 by the Birmingham Small Arms Company and then Gamo (UK) Limited.It was manufactured in .177 (4.5 mm) .22 (5.5 mm) and .25 (6.35 mm), the latter named the "635 Magnum".
Alexander Bain of Britain patented a pump action harmonica gun in 1854 that was actuated via a sliding piece underneath the barrel. [2] [3] Another pump action firearm with a magazine was the gun patented in America on the 22nd of May in 1866 by Josiah V. Meigs although the pump action was actuated via the trigger guard rather than a sliding ...
The Thompson gun barrel was "ported" (i.e. drilled with holes) to provide a controlled release of high pressure gas into the silencer that surrounds it before the bullet leaves the barrel. The silencer, 2 inches (5.1 cm) in diameter, went all the way from the back of the barrel to well beyond the muzzle , making up half the overall length of ...
Drum pumps on barrels. Drum pump, barrel pump, and transfer pump refer to pumps that are used to empty barrels, tanks, IBCs and drums. [1] Many liquids used on manufacturing and processing plants are delivered in 100 or 200 litre barrels and are too heavy to tip to empty the liquids inside.
Blank Firing Adapter attached to an M16 rifle/M203. BFAs for blowback and gas-operated firearms are relatively simple. These weapons depend on high pressures in the chamber generated by the combustion of the propellant to push the breech block to the rear, allowing another round to be chambered and fired.