An "elevating guy" (cable) connected to a loop in the upper side of the barrel and the rear end of the bed.

The United States Army began production and equipping with this mortar late in the war but it is doubtful whether any were used in combat.

The disassembled weapon was usually transported on horsedrawn carts but the Canadian Automobile Machine Gun Brigade (the Canadian Independent Force or "Brutinel's Brigade") is known to have successfully used the mortar both mounted on motor trucks and dismounted in the closing months of the war.

[7][8] The 52-pound cast-iron fin-stabilised high explosive bomb carried the percussion primer at the base in the intersection of the four vanes (fins), consisting of a specially loaded blank .303 rifle cartridge.

For ranges above 1,000 yards (910 m), additional charges were loaded before the bomb, held in two white cambric bags each containing 1 oz 4 drm of cordite.