I'd seriously look at the Troy or VTAC Alpha rails. They use the GI barrel nut so you'd be able to do the install yourself with very little effort.
This new Troy looks very promising as well:
https://troyind.com/products/sdmr-rail-10-blk

You've gotten some pretty good advice here from AH64guy.

Let us know what you end up going with.

Last edited by pdcrig; 04/23/14.