Quote Originally Posted by TehLlama View Post
If you feel like that much might apply to you, you're going to want a 12" handguard that goes well past the FSB.

The options are to shave the FSB down and run a handguard over it, or to just keep the FSB and run an 12.0 FSP rail.

I decided on the latter (the Centurion C4 12.0 FSP rail), and after dremeling away the delta ring and snipping the handguard cap and sling swivel off, the install was incredibly easy. The end result with this rail is fantastic, the only downside at all is that you still have a fixed sight (not much of a downside if that's what you wanted anyway).
Yeah, I definitely did so in short order. Ended up putting Troy alpha's on a couple. Just wanted to convey my experience when I was in his shoes (or close to it).