Apex makes a series of retrofitable aluminum handguards. I personally don't love the rails that are festooned over many "high speed" AR15s now. Many of the guards Apex offers have slots that both allow rapid cooling, and also give an easy way to mount short rails across the guard.
One of the best things about Apex is their "GatorGrip" pattern. This is a very grippy pattern that is still not abrasive enough to cut the hand if used aggressively.
One of the best things about Apex is their "GatorGrip" pattern. This is a very grippy pattern that is still not abrasive enough to cut the hand if used aggressively.