I have ordered 2 pairs of M30's for rear and side surrounds. I know they have key slots for openings but would like to mount them. Does anyone have any experience with the Pinpoint AM-10? I know that you would have to screw into the back of the speaker. The AM-40 is the better option but they cost 60 dollars a pair and getting them shipped overseas is looking difficult. Anyone ever use the AM-10?? Your input is appreciated..