The Kinetic Research Group Whiskey 3 Gen 6 Forend is the polymer forend that comes on the gen 5 and newer W-3. It's lighter than the older aluminum forend by about 7oz roughly and has a built in QD mount point on the sides plus threaded mounting points on the sides and bottom. It has a built in barrier stop in front of the mag and a flat bottom surface. Fits: All Whiskey-3, X-ray, and Bravo chassis Note: When using with spigot mount, leave off front two mounting screws for forend. Older chassis don't have these threaded mounting points on the backbone anyway.