ffs learn the difference between disintegrating and non disintegrating belt.
Many modern ammunition belts use disintegrating links. Disintegrating links retain a single round and are articulated with the round ahead of it in the belt. When the round ahead is stripped from the belt and fed into the feed system or chamber, the link holding it is ejected and the link holding the following round is disarticulated. Many disintegrating belt designs allow two pieces of belt to be connected by a cartridge, it applies even to non-disintegrating belts. When done by assistant gunner in combat, linking a new belt to the end of the belt already being fed in the weapon allows for continuous fire without the need to open the feed tray and reload.
non disintegrating belt
This type of belt consists of a design that can be reused, as it does not fall apart during function, similar to a feed strip. This is found only on a few types of machine guns still in use, such as the Soviet DShK, RPD, PK, the Russian RPL-20, PKP Pecheneg, the German MG 34, MG 42, MG 3, Chinese QJY-88, and the British Vickers, which used a non-disintegrating canvas and brass belt links. Arguably, precursors to the belt-fed machine gun were the Cass rifle, patented in 1848, and the Treeby chain gun, patented in the 1850s.[2] Belts were originally composed of canvas with pockets spaced evenly to allow the belt to be mechanically fed into the gun. These designs were prone to malfunctions due to the effects of oil, grease, and other contaminants altering the shape of the belt. If they became saturated with water, canvas belts including the loops holding the cartridges would contract, and the gun mechanism would be unable to extract the rounds. Later belt designs used permanently connected metal links to hold the cartridges, and weapons which originally used canvas belts such as the Vickers Gun were then deployed with these more dependable formats. These belts were more tolerant to exposure to solvents and oil. Despite it being a more efficient system, few are still used, possibly due to the added cost and effort. Non-disintegrating belts often come in pieces of limited length connected by disintegrating link, and after being fed through the weapon the piece falls off, limiting the length of the used belt hanging from the weapon to no more than one such piece. Many weapons designed to use non-disintegrating metal links or canvas belts are provided with machines to automatically reload these belts with loose rounds or rounds held in stripper clips. In use during World War I, reloaders allowed ammunition belts to be recycled quickly to allow a practical rate of continuous fire
The M1919 originally fired the .30 cal M1906 (.30-06) ball cartridge, and later the .30 caliber M2 ball cartridge, contained in a woven cloth belt, feeding from left to right. A metal M1 link was later adopted, forming a “disintegrating” belt.
The M1 link, was the U.S. military designation for a steel disintegrating link designed for the M1917 Browning machine gun and M1919 Browning machine gun, and the .30-06 Springfield cartridge that they fired. A single round would hold two links together, and more could be added to make up a belt of any quantity of rounds, though for the mounted machine guns of the time, a belt of 250 rounds was most commonly used. As was the trend with American belt-fed firearms, as opposed to Soviet designs, belts of ammunition feed into the gun from the left side to the right.
The left side of a single link had a circular loop which would hold the main body of the cartridge case, and an extension on the right that formed two similar loops which was designed to fit in between the two right-side loops of the next link. The rear loop of the right side of the link would hold onto the cartridge case just below the shoulder, as would the left side loop, where the front loop of the left side of the link held onto the cartridge neck, and was therefore a bit smaller in diameter. This was designed so that the M1919 machine gun’s extractor claw would take hold of the rim of the cartridge and pull it out of the linked belt from the rear, where it would then be fed into the chamber and would rest there until fired. The feeding pawl in the gun would pull the belt to the right as the gun was fired or cocked, sending the loose link out to the right side of the receiver, where the expended case was dropped vertically below the gun. This disintegrating system is a contrast to older canvas belts and other non-disintegrating metal link belts, although disintegrating-link types are almost universal in the present day, as the lower cost and lack of a loose, empty belt end to deal with are very attractive to the military.
M1 links were used during World War I, World War II, and the Korean War but were replaced in frontline service by the NATO M13 link developed for the M60 machine gun.