| Year | 1943 |
| Weapon Type | [@type] |
| Origin & Designer | [@designer] |
| Numbers Produced | 2.580 (All |
| Crew | Sergeant/Section Chief + .30 cal M1 Rifle. Corporal/Gunner + .30 cal M1 Carbine. Pvt/Assistant Gunner + .30 cal M1 Carbine. 2 x Pvts/Loaders + .30 cal M1 Carbines. 4 x Pvts/Ammunition Bearers + .30 cal M1 Carbines. Pvt/Driver (Towing Vehicle) + .30 cal M1 Rifle w/M7 Grenade Launcher. |
| Calibre | 105mm (105.2x372R) |
| Elevation | -9° to +30° |
| Traverse | 45° |
| Breech | Horizontal Block |
| Recoil | Hydropeumatic |
| Gun Sight | M16 |
| Gun Mount | [@gun_mounts] |
| Carriage | M3: Split Trail |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 1.680m (L/19) |
| Overall Length | 3.94m |
| Width | [@width] |
| Height | [@height] |
| Weight | In Action: 1.130 kg |
| Round Weight | HEAT (M67) 16.62 kg. HE (M1) 18.35 kg. Smoke (M60) 18.97 kg. |
| Muzzle Velocity | HEAT 311 m/s. HE 311 m/s. Smoke 311 m/s. |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | 2 r.p.m. |
| Rate of Fire | [@rate_of_fire] |
| Maximum Rate of Fire | 4 r.p.m. |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | HEAT: 2.746m HE: 7.589m Smoke: 7.5 |
| Armour Penetration | 102mm @ 0 to 1.830m @ 30° (HEAT) |
| Traction | Motorised (1 ½ Ton 4x4 Cargo Truck). |
| Variants | M3A1: New lighter carriage. Year 1944 M3A2: Fitted with 6.4mm gun shield. Year 1945 |
| Notes | Designed as a light Howitzer mainly for airborne use, the M3 was a combination of a shortened 105mm barrel mounted on a modified 75mm M3A3 carriage which had split trails. It fired a faster burning round then the field version and had a short range. The M3 was also the standard field piece issued to Infantry cannon companies and were usually held at regimental level. The M3 partnered the lighter 75mm M8 Howitzer in Airborne and Marine Field Artillery Regiments. |