In aircraft, several factors brought about the replacement of rifle-caliber machine guns by autocannon.

However, during the late 1930s, it became apparent that, with the development of mortars, high-angle artillery, and the. 50 caliber M2 Browning machine gun, the need for extreme long-range, rifle-caliber machine-gun fire was decreasing.

When Hiram Maxim developed his recoil-powered machine gun that used a single barrel, the first main design was a modest 26 pounds ( 11. 8 kg ) and fired a. 45-inch rifle-caliber bullet ( from a 24-inch barrel ).

The term " medium machine gun " is used to refer to the ubiquitous full-power rifle-caliber machine gun designs, which are alternately called general-purpose machine guns or universal machine guns.

The mediums fired full-power rifle-caliber ammunition, but had some concessions for more extended firing and more general usage.

Because of high pressures, rifle-caliber delayed blowback firearms, such as the FAMAS and G3, have fluted chambers to ease extraction.

The M163 gunner is exposed in the open turret, whereas in the ZSU-23-4 the gunner is in a fully enclosed armored turret ; this gives the M163 gunner much better situational awareness and field of view at the cost of losing protection against rifle-caliber weapons.

In this system there was no recoiling barrel nor gas piston as with other rifle-caliber autoloading designs, so the mechanism was simple, but ejection of fired cartridge casings was so fierce as to be hazardous to bystanders.

The enemy had filtered across the river during the night and a full force of 1000 men, armed with Russian machine guns, attacked the position held by Chandler's men.

The first rattle of the machine guns, at 7:10 in the evening, roused around me the varied voices and faces of fear.

The cavalry had to beware of high velocity rifles and machine guns like the foot soldiers, who at least had a trench to protect them.

Weaponry varies by a very wide degree between AFVs-lighter vehicles for infantry carrying, reconnaissance or specialist roles may have only a machine gun for self-defence ( or no armament at all ), whereas heavy self propelled artillery will carry large guns, mortars or rocket launchers.

This features a main artillery gun, mounted in a fully rotating turret atop a tracked automotive hull, with various additional machine guns throughout.

Specific weapon systems used include machine guns, autocannons, larger guns, or missiles, and some mount both guns and longer-ranged missiles.

Many are equipped with machine guns for defence against enemy infantry.

* Equipment: Abu Sayyaf uses mostly grenades, bombs ( modified IED's and land mines ), machine guns, rifles, rocket launchers and other weapons have been reported.

After hard lessons early in the war, machine guns were mounted for use against infantry but the limited traverse of the mounting meant that they were still less effective than those used on turreted tanks.

The cars were primarily armed with light machine guns.

Specific weapon systems used include machine guns, autocannons, larger guns, or missiles, and some mount both guns and longer-ranged missiles.

Anti-aircraft machine guns have long been mounted on trucks, and these were quite common during World War I.

Later the British also developed a version of the Mk. VI light tank armed with 4 machine guns that was known as Light Tank AA Mk. I.

The turrets carried four. 50 inch ( 12. 7 mm ) machine guns, which were designed to be adjusted to converge at the single point where enemy aircraft were expected to appear at low altitude in conduction of strafing runs directed at large infantry and field artillery units.

Other forces followed with designs of their own, notably the American M16 created by mounting quadruple M2 machine guns on a M3 Half-track.

The British developed their own SPAAGs throughout the war mounting multiple machine guns and light cannon on various tank and armoured car chassis and by 1943, the Crusader AA tanks, which mounted the Bofors 40 mm gun or two-three Oerlikon 20 mm cannon.

** M1918 Browning Automatic Rifle, an American family of automatic rifles and light machine guns

Engineers added sliding armoured steel doors with multiple openings to serve both artillery and machine guns.

In the early 20th Century, it was found in myriad applications including saxophone mouthpieces, whistles, cameras, solid-body electric guitars, telephone housings and handsets, early machine guns, pistol grips, and appliance casings.

During the First World War, on the Western front, the two sides had been locked in a trench war, where kill zones by overlapping fire of machine guns and barbed wire prevented either side from breaking through.

There is a fine collection of small arms and machine guns, plus maps, uniforms and paintings on display.

The maneuvers were held `` in secret '' after a regional seminar for the Minutemen, held in nearby Shiloh, Ill., had been broken up the previous day by deputy sheriffs, who had arrested regional leader Richard Lauchli of Collinsville, Ill., and seized four operative weapons, including a Browning machine gun, two Browning automatic rifles and an M-4 rifle.

Even at this short distance they were only vague shapes, setting up the machine gun on a small knoll so that it could fire above the heads of the rest of the patrol.

Joseph Brown continued in business by himself, quickly rebuilding the establishment which had been lost in the fire and beginning those first steps which were to establish him as a pioneer in raising the standards of accuracy of machine shop practice throughout the world.

He pointed out to the commissioners that the agency was literally dependent now on the machine processing, `` and the whole wheels of the agency would stop if it broke down or the three or four persons directing it were to leave ''.

Competing machines such as the Altair 8800 generally were programmed with front-mounted toggle switches and used indicator lights ( red LEDs, most commonly ) for output, and had to be extended with separate hardware to allow connection to a computer terminal or a teletypewriter machine.

The capacitors on each drum were organized into 32 " bands " of 50 ( 30 active bands and 2 spares in case a capacitor failed ), giving the machine a speed of 30 additions / subtractions per second.

Based on the Motorola 68000 family of microprocessors, the machine sports a custom chipset with graphics and sound capabilities that were unprecedented for the price, and a pre-emptive multitasking operating system called AmigaOS.

Although Acorn were able to shrink substantially the same functionality as the BBC into just one chip, manufacturing problems meant that very few machines were available for the Christmas period — to the extent that some shops reported eight presales for every delivered machine.

The topology was a bus: cables were daisy-chained from each connected machine to the next, up to the maximum of 32 permitted on any LocalTalk segment.

Take as an example a program that looks up a specific entry in a sorted list of size n. Suppose this program were implemented on Computer A, a state-of-the-art machine, using a linear search algorithm, and on Computer B, a much slower machine, using a binary search algorithm.

As long as the machines were synchronized, the mix would sound more-or-less normal, but if the operator placed his finger on the flange of one of the players ( hence " flanger "), that machine would slow down and its signal would fall out-of-phase with its partner, producing a phasing effect.

* Burroughs produced the B1700 or " small systems " computers that were designed to be microprogrammed, with each process potentially getting its own virtual machine designed to be the best match to the programming language chosen for the program being run.

59 machine gun were of Czechoslovak design.

They also suspect that the Continuity IRA arsenal contains some weapons that were taken from Provisional IRA arms dumps, including a few dozen rifles, machine guns, and pistols ; a small amount of the explosive Semtex ; and a few dozen detonators.

Strong points armed with heavy machine guns were set up around the island, particularly around the island's two airports.

The most common of these products were the Epyx FastLoad, the Final Cartridge, and the Action Replay plug-in cartridges, which all had machine code monitor and disk editor software on board as well.

All three computational processes ( recursion, the λ-calculus, and the Turing machine ) were shown to be equivalent — all three approaches define the same class of functions.