Original U.S. WWI Model 1918 Mark I Trench Knife by L. F. & C. with French Made Steel Scabbard Display Guns & Parts Sets Due to the unrifled barrel

Due to the unrifled barrel

25 inches (32 mm) wide and is white with two scarlet stripes

and is now loose around it

Moon clips may either hold an entire cylinder's worth of cartridges together (full moon clip)

Shortcomings

Original U.S. WWI Model 1918 Mark I Trench Knife by L. F. & C. with French Made Steel Scabbard Display Guns & Parts Sets Due to the unrifled barrelOriginal Item: Only One Available. The U. S. Model 1918 Mark I Trench Knife was the second major "Knuckle Knife" to be officially adopted and issued to the US military. It was developed for use in the horrific trench warfare that typified the stalemate on the Western Front during the latter part of World War One and saw use not only there, but during World War Two as well. The knife was manufactured in the United States by Henry Disston & Sons (H. D.