Credit
Hunini · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
FORCETALLY
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At a glance
M197 electric cannonlarger figure on 1 of 3
M198 howitzerlarger figure on 2 of 3
Counts only measures both sources give with the same scope. A larger figure is not a better system.
Measured figures
Length
Single source1,828 millimetres (72.0 in)[source]
Combat
Single sourceConfiguration
| Specification | M197 electric cannon | M198 howitzer |
|---|---|---|
| Type | Rotary cannon[source] | Towed howitzer[source] |
| Place of origin | United States[source] | United States[source] |
| In service | 1967–present[source] | 1979–present[source] |
| Used by | United States Marine Corps[source] | See Operators |
Travel
Single sourceCombat: 11 m (36 ft 2 in) Travel: 12.3 m (40 ft 6 in)[source]
Travel
Single sourceTravel: 2.8 m (9 ft 2 in)[source]
Travel
Single sourceTravel: 2.9 m (9 ft 6 in)[source]
enlisted men
Single source9 enlisted men[source]
Maximum; Conventional
Single sourceMaximum; RAP
Single sourceMaximum; RAP and L/52 barrel
Single sourceConventional: 22.4km (14 mi), RAP : 30km (18.6 mi), RAP and L/52 barrel: 40km (25 mi)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Designer | General Dynamics[source] | — |
|---|
| Manufacturer | General Dynamics Armament Systems[source] | Rock Island Arsenal (US)[source] |
|---|
| Cartridge | 20×102mm[source] | — |
|---|
| Barrels | 3-barrel (progressive RH parabolic twist, 9 grooves)[source] | — |
|---|
| Wars | — | Lebanese Civil War Gulf War Somali Civil War War in Afghanistan (2001–2021) Iraq War War in Iraq (2013-2017) Syrian Civil War 2025 Cambodia‒Thailand conflict 2026 Afghanistan-Pakistan war[source] |
|---|
| Designed | — | 1968–1977[source] |
|---|
| Unit cost | — | US$ 527,337[source] |
|---|
| Produced | — | 1978–1992[source] |
|---|
| No. built | — | 1,600+[source] |
|---|
| Shell | — | Separate loading charge and projectile[source] |
|---|
| Breech | — | Interrupted screw[source] |
|---|
| Recoil | — | Hydro-pneumatic[source] |
|---|
| Carriage | — | Split trail[source] |
|---|
| Elevation | — | −5° to +72°[source] |
|---|
| Traverse | — | 45°[source] |
|---|
| Reported operators | — |
|
|---|