Re: Ar15 all metal round handguard
I would strongly urge you to consider one with ventilation around it. Without the holes for ventilation, when the barrel gets hot, so does the handguard. Also, the holes aid in gripping the forend. Every metal forend I have had without holes, very quickly got holes put into them, or was replaced.
The only solid handguard I have without holes is an Alexander Arms one that looks like it is carbon fiber, but I think it is something like G10/fiberglass, or something like that. It is damned tough, looks great, and doesn't seem to transmit heat at all like the solid metal ones do. I really like that one. But, with that said, I would think that one of those handguards with holes in it would be even better.