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At a glance
GAU-12 Equalizerlarger figure on 0 of 3
KS-19larger figure on 3 of 3
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source83.2 in (2.11 m)[source]
Length
Single sourceConfiguration
| Specification | GAU-12 Equalizer | KS-19 |
|---|---|---|
| Type | Rotary cannon[source] | Anti-aircraft gun[source] |
| Place of origin | United States[source] | Soviet Union[source] |
| Designer | General Electric[source] | L. V. Lyuliev[source] |
| Manufacturer | General Dynamics[source] | Plant No. 4, Perm[source] |
9.45 m (31.0 ft)[source]
Maximum; Maximum firing range
Single source12,000 feet (3,660 m)[source]
Maximum; horizontal
Single sourceMaximum; vertical, proximity fuze
Single sourceMaximum; vertical, time fuze
Single source21 km (13 mi) (horizontal) 15 km (9.3 mi) (vertical, proximity fuze ) 12.7 km (7.9 mi) (vertical, time fuze)[source]
APEX
Single sourceHEI API
Single sourceMuzzle velocity
Single source(HEI) 3,400 ft/s (1,040 m/s); (API) 3,280 ft/s (1,000 m/s); (APEX) 3,200 ft/s (970 m/s)[source]
Barrel length
Single source5.742 m (18.84 ft)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Cartridge | 25 × 137 mm[source] | — |
|---|
| Barrels | GAU-12: 5-barrel GAU-22: 4-barrel (progressive RH parabolic twist, 11 grooves)[source] | — |
|---|
| Action | Hydraulic, Electric, Pneumatic[source] | Semi-automatic horizontal sliding wedge[source] |
|---|
| Feed system | Linked or linkless[source] | — |
|---|
| Sights | Lead Computing Optical Sight System (LCOSS)[source] | — |
|---|
| Operation | electric[source] | — |
|---|
| Weight (complete) | 270 lb (122 kg)[source] | — |
|---|
| Projectile weight | (HEI) 6.5 oz (184 g); (API) 7.6 oz (215 g)[source] | — |
|---|
| Muzzle energy | (HEI) 73,400 ft·lbf (99,500 joules); (API) 79,300 ft·lbf (107,500 joules)[source] | — |
|---|
| In service | — | 1948−present[source] |
|---|
| Used by | — | See § Operators[source] |
|---|
| Wars | — | Korean War Vietnam War Iran–Iraq War Soviet–Afghan War Gulf War Somali Civil War 2003 invasion of Iraq Russo-Ukrainian War Second Nagorno-Karabakh War[source] |
|---|
| Designed | — | 1947[source] |
|---|
| Produced | — | 1948−1957[source] |
|---|
| No. built | — | 10,151[source] |
|---|
| Variants | — | See § Variants[source] |
|---|
| Shell | — | AP-T, APC-T, HE, HE-FRAG, FRAG[source] |
|---|
| Elevation | — | +85°/-3°[source] |
|---|
| Traverse | — | 360°[source] |
|---|
| Reported operators | — |
|
|---|