Original British WWII Vickers Gun Trigger Firing Lever Assembly Disallow PayPal & Amazon Checkout The principal change was to

The principal change was to stamp the ventilator hole mounts directly onto the shell

5 x 11 inches

this is because WW1 slings were reissued in WW2

The M1916 design had side-mounted horn-like ventilator lugs that were intended to be support for an additional steel brow plate or Stirnpanzer

and European armies learned during WWI just what would be required of wire cutters in combat

Original British WWII Vickers Gun Trigger Firing Lever Assembly Disallow PayPal & Amazon Checkout The principal change was toOriginal Item: The British call it the firing lever; we call it the trigger. Pressing it fires the gun. In the Vickers gun, the firing lever has a pivoted pawl integrated into it, and the pawl is held in place by an axis pin. This product includes all three components.