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3in Pack Howitzer M1A1


Weight: 653 kg (1,439 lbs)
Length: 3.68 m (12 ft 1 in)
Barrel length
Bore: 1.19 m (3 ft 11 in) L/15.9
Overall: 1.38 m (4 ft 6 in) L/18.4
Width: 1.22 m (4 ft)
Height: 94 cm (3 ft 1 in)
Crew: 6 or more
Caliber: 75 mm (2.95 in)
Breech: Horizontal block
Recoil: Hydropneumatic, constant
Carriage: Box trail, dismantling
Elevation: +5° to +45°
Traverse: 6°
Rate of fire: 3–6 rounds per minute
Muzzle velocity: 381 m/s (1,250 ft/s)
Effective firing range: 9,600 yards

4.1in M2A1 Howitzer

The standard light field howitzer in the US Army.

Weight: 2,260 kg (5,000 lb)
Length: 5.94 m (19 ft 6 in)
Barrel length: 2.31 m (7 ft 7 in) L/22
Width: 2.21 m (7 ft 3 in)
Height: 1.73 m (5 ft 8 in)
Shell: 105x372R
Caliber: 105 mm (4.1 in)
Breech: horizontal block
Recoil: hydropneumatic, constant, 42 in (110 cm)
Carriage: split trail
Elevation: -5° to +66°
Traverse: 46°
Muzzle velocity: 472 m/s (1,550 ft/s)
Maximum firing range: 11,270 m (7.00 mi)