Adopted at the armament new shot gave the opportunity to significantly reduce the weight and strength of the recoil species of small arms ammunition in the portable version to do more to increment mobility units, and coupled with the changed strategy and action mechanized infantry branch.
Work on the creation of weapons under the "single cartridge"
Work on the creation of weapons under the "single holder" with a reduced pulse acts were preparing for a long time before retrofitting. In the late 60-ies of XX century in the British Isles dates back programm re-SA-80, which is foreseen in the creation of new types of small arms in the types of IW (personal weapons) and LSW (light weapons military support). The realization of these programs from category was created IW assault rifle XL-65 chambered 4.85h49, as a result of work on the category of LSW was the creation and adoption of the armed forces of the kingdom of machine guns, which, after standardization programs from a "single cartridge" was the title of L86A1. During the same rifle was called applets L85A1.
The principle acts machine gun L86A
Machine gun L86A1 is designed based on an assault rifle L85A1. It is a type of automatic weapon, where the mechanism of the automation is the use of energy gunpowder gases that appear after a shot from the bore guns. When firing part of the liberated gas is derived from the stem portion and makes the pressure on the gas piston, which has a small stroke. Lead system is equipped with a gas propellant gas regulator that fits the weapon to fire in the field and other unusual situations, also supports the creation of firing grenades. Under pressure from the energy of the gases in the piston moves back side of the frame and uses a gate that moves progressively through two guide rods, which increases the reliability of the instruments at its pollution. The gate at the exit from the state of engagement with the barrel breech 7 lugs, in the process of working traffic ekstraktiruet shoot cartridge. Under the influence of uncompressing revertible spring bolt starts forward march, with all this dosylaya subsequent ammunition in the chamber while simultaneously locking the barrel. When shooting of all the rounds in the cage, gun is set to shutter lag, which is switched off manually by using the flag — the fuse box on the right side of the trunk area behind the hole for the extraction of spent cartridges. The hole is on the right at the top of the machine gun and carries the iron curtain with a spring which rises at a shot to eject spent cartridges. Constructive placement holes for extraction makes shooting difficult for a person with the left hand lead, because when the emphasis in the left shoulder red-hot bullets will fly straight in the face of the shooter. The machine gun is arranged on the Bullpup configuration (clip is behind the trigger), which makes it a little more size than the traditional location of the cage. With such length of the barrel. USM hammer type, connected to a pull-down rod. Flag-fuse is above the trigger guard, and executed in the form of a button with the provisions of the «safe» and «fire», and the interpreter type of fire is located in the lower left part and provides an opportunity to fire a 2-positions: single shots and gunfire. Trunk box consists of 2-parts (upper and lower), which have pin joint. When assembling the gun used as iron and nylon parts of the over-strength materials (hardware tools).
The differences between the machine gun and assault rifle
The differences between the machine gun and assault rifle made in barrel length (646mm and 548mm at L86 at L85), in the presence of L86 additional handle, which is placed over the neck ring and helps to keep fire bursts .. Also equipped with a machine gun L86A1 bipod, which increase the area of resistance machine gun in prone. Bipod adjustable for height only c19 cm to 28.5cm.
Disadvantages and advantages guns
These include low ruggedness as the layout L85A1, and the small capacity of the standard clips (clips are used on 30 shots, but could also be the use of tanks firing standard STANAG 4179 under the "single holder"). The main advantages of L86A1 equate it with good accuracy, which directly depends on the length of the barrel and the equipment "optics» SUSAT.
The machine gun is still in service with the Army of the United Kingdom, and is designed to support infantry units of high density fire, or damage the enemy infantry at ranges exceeding the lethality of assault rifles, machine guns, short-barreled L85 and L110, which are coming to replace the L86.