Eat-Man '98
Bolt Crank, the World's Greatest Mercenary, who has the ability to eat any object, mostly metal and weapons. When the time comes, he can reproduce those weapons and items in his right hand.
Starring Masashi Ebara
It's a animation and action & adventure show, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United Kingdom.