Original Item: Rare original firing pin for the Vickers Medium Machine Gun. This is the No. 1 version, issued with the gun for a very short period of time. It was soon replaced by the No. 2, which had been developed to provide increased cyclic rate for aircraft applications. These firing pins are correct, complete, and are in the original arsenal grease. No. 1 firing pins for the Vickers are extremely rare. We have very very few!