I run a DPMS and have had no problems over 3k rounds.
I send my lowers to
http://www.m60joe.com/ , send him an e-mail and ask this question he may be able to help. You will need to remove some of the rear upper lug to allow use of a link re-enforcer
http://www.knsprecisioninc.com/New%20Products.htm I do that part my self. You could do the clearance work your self and I may try it some day but I figure it’s worth the time and money to have it done by some one that knows what they are doing. And don’t forget to have some carriers done and get some different thickness paddles, do it now and you’ll be ready to run when your form 4 comes back. We need an RLL forum it would be interesting and may be a big help
http://www.youtube.com/watch?v=XCDie5UxAgo