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Cartridge, 40 mm, HE-T, M677
Region
United States
Category
Боєприпаси, ракети та високоточне озброєння
Armament 40 mm high-velocity grenade launchers. Development By US Army Ordnance. Description This cartridge is a high-explosive round containing a tracer element for flight tracking purposes, designed to inflict personnel casualties in the target area from ground burst effect. This cartridge is a fixed round of ammunition consisting of an internally embossed one-piece steel projectile body with a metal rotating band, and a cartridge case assembly containing a propelling charge and a percussion primer. An impact
fuze is threaded into the front end of the projectile. The projectile cavity contains a high-explosive bursting charge and an RDX booster pellet seated below the fuze. A trace element is threaded into the opening in the centre of the projectile base. The projectile assembly is press-fitted into a cartridge case. The case is an aluminium bi-chambered cylinder with a metal closing plug crimped into the open well of the propellant chamber in the base. The propelling charge is contained in the spherical high-pressure propellant chamber. The chamber has vents in the top and is sealed in the bottom by the closing plug. The hollow chamber in the upper section of the case acts as a low-pressure chamber. A percussion primer is crimped into the centre opening in the closing plug. Manufacturer US government contractors.