The Hera Arms IRS Handguard is one of the leading systems on the market, thanks to the consequent implementation of the integral approach, the reduced diameter and the dedicated barrel nut. The IRS handguard comes with a barrel nut and mounts with a 3 screw clamp for stability. The IRS System can also be used on platforms using a barrel nut thread compatible to the AR-10 system. This handguard is designed to match up with the DPMS, and clones, low profile upper receiver.