Original U.S. WWI Extremely Rare Inert Mk. I Defensive Grenade with Original Fuse and Lever Category_MG 34 Barrel Jacket Assembly This only occurred after long

This only occurred after long continuous firing in a combat emergency situation

There is light wear to the paint

so the lever is still tight against the stock

underside of the barrel near the frame

The portions burnt away in the demilitirization process have been reconstructed and the internal areas have been totally destroyed then filled with bar stock steel

Original U.S. WWI Extremely Rare Inert Mk. I Defensive Grenade with Original Fuse and Lever Category_MG 34 Barrel Jacket Assembly This only occurred after longOriginal Item. Only One Available. The Mk 1 grenade (sometimes spelled Mk I) is a fragmentation hand grenade used by American forces during World War I. According to its designers, it was to be the "simplest", yet most "fool proof", grenade ever made. However, some major problems appeared when the grenade was used in the field. It was retired from service before the war ended, replaced in 1918 with the improved Mk 2 grenade used through World War II.