M68 tank gun

M68
Front view of a M68E1 gun on an American M60A3 main battle tank during a military exercise in Nuremberg, 1986.
TypeTank gun
Place of originUnited States
United Kingdom
Service history
In service1960–present
Production history
DesignerWatervliet Arsenal
ManufacturerWatervliet Arsenal
Produced1959–present
VariantsM68E1, M68A1, M68A1E4
Specifications
Mass754 kg (1,662 lb) (gun tube)
1,128 kg (2,487 lb) (recoiling gun mass)
Length5,550 mm (218.50 in) (overall)
Barrel length5,347 mm (210.51 in) (gun tube)

Shell105×617mm. R
Calibre105 mm (4.134 in)
Breechsemi-automatic vertical sliding-breechblock
Recoil305 mm

The M68 is an American 105 mm tank gun. It uses British-designed L7 gun tube and cartridges with an American-designed mount, breech assembly and recoil mechanism.