wohooooow finally :DDD i figured out how to use the repeating gun!!: take the fuse valve Fuse Vale and put it on the left boiler... set it on 60....i put the repeating rifle on th left and attach there a alternator valve....for left side use the one wich shows with the 2 ends to the left.......u connect the alternator valve with the fuse valve...if your fuse valve looks up wards the spring also has to look up and so on......if you made that, your repeating gun is full usable ^^....ah yeah and if u don't need to crouch or walk in a mission put a end cap on the boiler u don't need