Check the listing for details. MDT Chassis Interior Forend Weights ACC Premier Gen2 4pk Accessories 110007-BLK. Color: Black, Condition: New. Listed at 139.99 USD. Add internal weight to you MDT ACC Gen2 Chassis.DETAILSThese weights mount on the inside channel. With the maximum 4 weights, they add weight to your ACC chassis system. They can be added and removed without removing your barreled action, simply remove the cap, slide them into the desired location, and screw them in place from the bottom.SPECIFICATIONSUnderside clearance slot to allow mounting of M-Lok accessories to ACC chassis even with weights installedSide clearance slots to allow mounting accessories to ACC Gen 2 even with weights installed3 sets of mounting holes to allow the weight to be shifted inside the barrel channel at 20mm (¾”) increments for tuning the rifle’s balance pointCOMPATIBILITYThis product has been designed specifically to fit interior channel of the ACC Gen2 chassis system, and is not compatible with any of our other chassis systems.HARDWARE INCLUDEDFour #10-24 x ½” Flat Head Cap Screws per weight for fastening to the chassisDIMENSIONSWeight: 0.52 lbs / weight (including screws), 2.56 lbs total.Material: Case-hardened Steel