These are original muzzle bush (barrel bearing) wrenches for the .30" Browning M1919A4 or British L3A3 & A4 ground role machine gun.

These are of the British Mark 1/1 pattern, that is, they are machined from solid steel stock and have a split machined through the wall of the collar to allow the wrench to give slightly when pushed over an oversized or slightly damaged muzzle bush. The wrenches are in excellent used condition. Unit of sale 1 wrench.

Stock No BMG 2.