I think the .50 gunner is holding the end of a hooked tubular body support bracket that is fixed to the left side of the gun mount. It must be a posed photo anyway as the tommy gunner has not cocked his gun.
I think the .50 gunner is holding the end of a hooked tubular body support bracket that is fixed to the left side of the gun mount. It must be a posed photo anyway as the tommy gunner has not cocked his gun.