4.5in M1 FIELD GUN

4.5in M1 FIELD GUN
Image: M1 4.5in Gun (US National Archive)
Weapon Type[@type]
Origin & Designer[@designer]
Numbers Produced416
CrewSergeant/Section Chief Leader + .30 cal M1 Rifle.
Corporal/Gunner + .30 cal M1 Carbine.
2 x Pvt/Assistant Gunners + .30 cal M1 Carbines.
2 x Pvts/Loaders + .30 cal M1 Carbines.
3 x Pvts/Ammunition Bearers + .30 cal M1 Carbines.
Pvt/Driver (Towing Vehicle) + .30 cal M1 Rifle w/M7 Grenade Launcher.
Elevation-0° to +65°
BreechInterrupted Screw
Gun SightM12
Gun Mount[@gun_mounts]
CarriageM1: Split Trail
Gun Shield6.35mm
Armoured Plate[@armoured_plate]
Barrel Length4.756mm (L/41.6)
Overall Length8.15m
WeightWeight in Transit: 6.078 kg
Weight in Action: 5.654 kg
Round WeightHE (M65) 24.9 kg.
Bagged Charge; 2.94 kg (M7) 5.08 kg (M8).
Muzzle Velocity693 m/s
Magazine Capacity[@magazine_capacity]
Practical Rate of Fire[@practical_rate_of_fire]
Rate of Fire4 r.p.m.
Maximum Rate of Fire[@maximum_rate_of_fire]
Maximum Ceiling[@maximum_ceiling]
Maximum Ground Range[@maximum_ground_range]
Maximum Range19.317m
Armour Penetration[@armour_penetration]
TractionMotorised (M5 Tractor)
NotesDuring World War One the US army was equipped with the 4.7in medium gun and 60 of these were used to equipped medium gun batteries. In 1920 the decision was made to replace them with a more modern design. The calibre remained the same and a new carriage was developed, but due to budget cuts this gun never reached the production stage. In 1939 a renewed design was tested which utilised the same carriage as the M1 155mm howitzer. This was ready in 1940 but the army then decided to change the calibre to fire the British 4.5in round. This was to standardise ammunition and resulted in the 4.5in M1 gun. The gun was issued at Corps level and served in northwest Europe. In September 1945 the guns were withdrawn from front line service and declared obsolete.