105mm M2A1 FIELD HOWITZER

105mm M2A1 FIELD HOWITZER
Image: 105mm M2A1 Howitzer (U.S. Army Signal Corps)
YearJanuary 1941
Weapon Type[@type]
Origin & Designer[@designer]
Numbers Produced10.202
CrewSergeant/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.
Calibre105mm (105x372R)
Elevation-5° to +66°
Traverse46°
BreechHorizontal Block
RecoilHydropeumatic
Gun SightM12
Gun Mount[@gun_mounts]
CarriageM2A2: Split Trail
Trailers[@trailers]
Gun Shield6.35mm
Armoured Plate[@armoured_plate]
Barrel Length2.310m (L/22.5)
Overall Length5.94m
Width[@width]
Height[@height]
WeightWeight in Transit: 2.258 kg
Weight in Action: 2.030 kg
Round WeightHEAT (M77) 16.71 kg.
HE (M1) 19.08 kg.
Chemical (M60) 19.43 kg.
Smoke (M84) 19.02 kg.
Muzzle VelocityHEAT 381 m/s.
HE 472 m/s.
Chemical 440 m/s.
Smoke 472 m/s.
Feed[@feed]
Magazine Capacity[@magazine_capacity]
Practical Rate of Fire3 r.p.m.
Rate of Fire[@rate_of_fire]
Maximum Rate of Fire10 r.p.m.
Maximum Ceiling[@maximum_ceiling]
Maximum Ground Range[@maximum_ground_range]
Maximum RangeHEAT: 7.854m
HE: 11.430m
Chemical:
Armour Penetration102mm @ 0 to 1.830m @ 30° (HEAT)
TractionMotorised (GMC Truck, M3 Half-Track & M5 Tractor)
Variants[@variants]
NotesThe US army had initially laid plans for a 105mm howitzer back in the 1920s, this was after noting the performance of the different 105s used by European nations in World War One. The Army requested a divisional howitzer that could be towed by mechanized units and fire a 105mm shell. The choice of carriage was based on a German model that had a split trail. The development of the fixed 105mm round and a muzzle break to absorb the recoil were added but progress was slow. By 1939 the army had tested a new carriage and the M2 was standardized in 1940, this went into full production and went on to replace the 75mm guns in each of the three field battalions contained in each Infantry division. Later modifications to the breech ring developed into the new M2A1 which became the standard light regimental howitzer and saw action on all fronts.