Hands-down, the best. - Precision Reflex AR-15/M16 Round Free Float Carbon Fiber Extended Forearm

I purchased a rifle-length, natural PRI Gen III for a “Mk 12 tribute” build. I have to say, this is probably the stoutest AR handguard I’ve ever handled, with a simple, rock-solid mounting system. Combined with a full-length top rail, it might as well be a monolithic upper.

Oh, and did I mention it’s lightweight?

I may end up slowly switching all of my AR builds (even my .308s) over to PRI handguards.