I'd recommend sewing machine oil or all purpose oil. Oil for firearms should be fine. Search for threads about oiling bracelets. I hear using bicycle chain grease (something crazy like that) works great. When you go and do this take it slow and keep your parts in order.
Looks great! I know the feeling. Took me a while to get my Bracelet to attach to my UPO. Amazing thing is that the rep factories already have them attached some how. Hahaha