Multi-barrel Weapons

M61A1/M61A2 20mm Gatling Guns

lightweight, highly lethal combat support
for a variety of air, land and
sea platforms

The M61A1 and M61A2 produced by General Dynamics Ordnance and Tactical Systems are externally powered six-barrel 20mm Gatling gun systems that offer lightweight, highly lethal combat support for a variety of air, land and sea platforms.

The M61A1 and M61A2 increases multiple-hit probabilities when compared to single barrel guns operating at lower rates of fire. The M61A1 and M61A2 weapons are based on the proven Gatling principle of operation and provide reliability up to 10 times greater than single-barrel guns.

The M61A2 shares the same features as the M61A1, but is 20 percent lighter. The M61A2 will meet or exceed the M61A1 gun's reliability, maintainability and supportability features. It is now available for applications where weapon system weight reduction is critical.

Specifications

Gun type Six-barrel, 20mm, externally powered

Weight

M61A1

M61A2

 

248 pounds (112.5 kg)

202 pounds (light barrel), 228 pounds
(heavy barrel) (91.6, 103.4 kg)

Rate of fire 4,000/6,000 shots per minute
Dispersion 8 milliradians diameter, 80 percent circle
Muzzle velocity 3,380 feet (1,030m) per second

Average recoil force

@ 4,000 shots per minute

@ 6,000 shots per minute

Rotary, linkless, closed loop

2,133 pounds (9.4 kN)

3,200 pounds (14.2 kN)

Drive system Hydraulic, electric, pneumatic
Feed system Linked or linkless


 

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