Cross Machine Tool UHPR HDX MOD 3 Quad Rail 15" 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 Milspec 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 sockets inserts, 2 on each side No Barrel nut shims required for installation Does not contact or apply side loads to 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 dimensions1.96" wide x 2.195" height Total weight including mounting hardware and barrel nut: 7": 9 oz 9": 11 oz 12.5": 14 oz 15": 16 oz Made & Assembled in USA