Weapon is needed

Getting more and more angry, dissapointed and also jealous M realized he would also need some kind of weapon because inside he knew that when they will meet each other a great fight will start and to loose that fight was not an option. M eagerly looked for weapons when following the man. What would he use when they meet at the end? Just outside the entrance of the German church a guy stood and sold something that might be useful for the fight. Nowadays this moment is remembered by a specially designed fence and on the right side of the entrance you might see what he bought and how many parts that he planned to shoot. (Some were broken but he bought all of them anyway). He also bought the weapon where these should be used with. 

Title of the document How many parts did he buy? (Letters) Do not include the weapon!