Matches perfectly shape of the sharps bros sbur03 and sbur04 billet uppers. sturdy steel barrel nut. - UTG Pro AR15 M-LOK 15in Super Slim Free Float Handguard

Matches perfectly shape of the Sharps Bros SBUR03 and SBUR04 billet uppers. Sturdy steel barrel nut. Just beware that you'll need a barrel nut wrench in 1-3.16" size crows foot, no thicker than 3/8" thick. If you don't have a suitable wrench, you won't be able to install the barrel nut. It doesn't come with a barrel nut wrench. The actual hand-guard is very high quality, super solid, m-lok all around. Scalloped top pic rail. The hand-guard does not have any anti-rotation tabs, bit in my opinion it really doesn't need any -- because it uses (4) torx 25 screws, and they screw directly into the steel barrel nut. You need to time the barrel nut for the hand-guard fastener holes to line up, but the included barrel nut doesn't interact with the gas tube at all. Over all, I absolutely LOVE how this Wilson Combat hand-guard matches exactly to the Sharps Bros Billet upper. Absolutely perfectly. Very solid lockup connection to the barrel nut. I would highly recommend this hard-guard.