Dmitry Shevchenko is a Ukrainian knife maker, who among conventional knives makes ones from all kind of unusual sources. For example, ha has knives made of motorcycle engine piston connecting rods, cables, bicycle chains etc. However especially interesting are his knives made of Mosin-Nagant rifle barrels.
Dmitry used a Mosin-Nagant barrel found in places where WW2 battles took place. As you can see in the picture both the bore and outside surface were badly corroded by rust. After all, this rifle must have been under the ground for 70 plus years. So probably the rifle was in non-restorable condition and the knife maker turned it into a work of practical art.
One of the knives is made of the chamber with seven or eight inches of the rifled portion. Dmitry cut the chamber in half and made the knife’s handle out of it. Then he flattened the rifled portion and made the blade from it. The breech threads are also retained. He puts a 7.62x54R cartridge in the chamber/handle making it look like a cutaway. Of course, the cartridge has no practical use there and is only for decoration.
Dmitry also made a couple of knives entirely from the rifled portion of the Mosin-Nagant barrel.
Another one has a 16 gauge shotgun brass case as the knife’s handle.
Here are a couple of videos from Dmitriy’s YouTube channel.