Originally Posted By 1911buyer:
I prefer to make up lightweight Osprey ARs. I'm sure the AA products are OK. Free float tubes won't go over the AA. I usually take a 1/2" Dremel drum abrasive to the Osprey rod clip to level it to piston cavity top, about 1/64" or 1/32". Touch it with a black felt pen. The carbon fiber AP free float tubes slide over nicely with no interference. http://www.apcustomusa.com/standard.php
This sounds interesting, can you please post of pic of that mod?