Greg, affirmative on the RDS as a ghost ring!
Make sure you Loctite the Troy- they come lose fast....
The MWI folding BUIS looks pretty good as well.
Thanks for the kind words Sidewinder 6! Bummer to hear about the N leakers, but fairly common.
FYI- we may be in Homestead at the end of March for a 3 Day Carbine Operators Course.