MANUFACTURER: Daniel Defense FAMILY: Accessories MODEL: DDM4 RAIL 15.0 TYPE: Accessory-Rails ITEM GROUP: Rifle Accessories FINISH: Black FINISH TYPE: Black OVERALL LENGTH: 15.2" WEIGHT: 14.8 oz. SHIPPING WEIGHT: 1.525 lbs. ADDL INFO: Free Floating Barrel Design ADDL INFO: Mil-Spec 1913 Picatinny Rails ADDL INFO: Uninterrupted Upper Rail MFG MODEL NO: 01-134-09186 UPC: 815604018227