Im hacking a k98 scoped and i need help assigning some parts bones or otherwise this happens

Clip (http://members.shaw.ca/jennyli/12.mpg)
(right click-save target)

I have no idea what bones they are supposed to be attached to so any help appriciated. Its just a scope, the front barrel, the stealth cover and the trigger.

thnks

look where they were assigned in the original reference

thnks allot i figured it out.