You may have to join, but there is a very good stripdown of the RN10/Pro-Target by Kev Todd in the technical reference library of the Air Arms Owners Club. Great picture of the trigger assembly with the cover off. Looks straightforward enough. Let us know how you get on.
L/H Pro-Target MK111 Burris Timberline 4.5-14x32 Ballistic Plex
L/H TX200HC Burris Fulfield II 3-9x40
L/H TX200 GinB
Why is dyslexia so difficult to smell?.