HERA ARMS IRS is modern designed, Quad-Rail Handguard made from high-quality aluminium and is build to handle the hardest use and abuse of tactical and competitive shooters. The IRS is CNC milled from T6060 aluminium alloy and hard coated anodized for added strength. Available in lenghts of 7", 9", 12" and 15". The IRS comes with it´s own barrel nut where the handguard is clamp mounted with 3 screws for additional strength. The anti-turn millings prevent the handguard turn even with the hardest use.