Nice and lightweight - Midwest Industries G3 Lightweight ML-Series One Piece Free Float Handguard, M-LOK

Very nice handguard. Very lightweight. The small diameter allows you to quickly grab and get on target. Only downfall is it has a gap at bottom where it mates against receiver, which is covered when you install the supplied clamp spacer, however that spacer does not fit if using with some billet receivers. The packaging on handguard does state that it may not fit all billet uppers, but it would be nice if they made ones that do. Luckily you can install without this spacer if you tighten screws enough to clamp tightly against barrel nut. Awesome handguard overall though.