Attaching static mesh to socket offsets, how to maintain world transform?

Hi,

to begin, sorry for posting 2 questions at once. I feel sort of silly like i dont know what im doing :stuck_out_tongue:

I just animated my slide for my gun in 3ds max instead of doing a timeline, and I wanted to know how to keep my sight’s position while attaching them to the slide’s socket. Screenshot:

edit

also, all my positions are zeroed, so having them at 0 would put them in the right place.