I'm trying to mount a Weaver 3-15X50 scope to an M1a National Match using the ARMs #18 rail. I plan on shooting with iron sights just as often as with the scope and am looking for a quick detach mount or rings. After doing a few calculations, a height of .950" to 1.000" would be the lowest possible over the [larger] national match rear sight while still having clearance. I'm having trouble finding exact mount heights and was wondering if anyone knew of something in this range. I'm ok with either a one piece detachable mount or simply quick release rings. I'd like to keep it under $150, but will stretch to $200 if its worth it. Thanks for the help.