Cross Machine Tool UHPR MOD 3 HDX 15" AR-15 Handguard

Cross Machine Tool UHPR MOD 3 HDX AR-15 Handguard Heavy-duty Xtreme Rails are built for the rigors of daily use. All HDX(TM) series rails feature Nitride-hardened steel QD sockets to withstand daily sling carry. Features Rail- 6000 series extruded Aluminum Mil-spec Type 3 Class 2, Hard Black anodized Barrel Nut- 7075 Aluminum Type 3 Class 2 Hard Anodized 17-4PH Cored Stainless Steel Rail mounting attachment- Patent Pending Anti-rotate tabs time Rail to upper receiver 2 each 4140PH Alloy steel Nitride finished QD sling socket inserts, 2 on each side No Barrel nut shims required for installation Does not contact or apply side loads to the gas tube Inner Diameter of handguard - 1.315" Machine-engraved T markings (not laser marked) will show up after paint. Includes barrel nut wrench Barrel Nut diameter- 1.378" Compatible with most known low-profile gas blocks Overall rail dimensions 1.96" wide x 2.195" height Made & Assembled in USA