MANUFACTURER: Daniel Defense FAMILY: Accessories MODEL: MK18 RIS II Rail Assembly TYPE: Accessory-Rails ITEM GROUP: Rifle Accessories FINISH: Flat Dark Earth FINISH TYPE: Other Finish SHIPPING WEIGHT: 1.6 lbs. ADDL INFO: Free Floating Barrel Design ADDL INFO: Mil-Spec 1913 Picatinny Rails ADDL INFO: Continuous Upper Rail MFG MODEL NO: 01-004-08020-011 UPC: 852548002813