Ultradyne Buffer Chassis Combos bundle an Ultradyne UD Chassis with a Gen 2 Adjustable Butt Stock and grip for a ready-to-build, plug-and-play rifle chassis platform with just one easy purchase. This rifle chassis combo provides for a versatile, lightweight build with the optimized UD5-length UD Chassis. Buying the combo saves you compared to purchasing each item separately.Designed for shooters, the combo delivers the core ergonomics and modularity of the UD System: adjustable length-of-pull and cheek rise on the stock for personal fit, and the UD5 length option for the most adaptable build you can have. CNC-machined in house from quality materials, Ultradyne chassis combos provide a fine-tuned final product that will help lead to success in the field. Cerakoted in an Armor Black finish. FeaturesMagazine Interface: AICS1.35" Max. Barrel DiameterFAB Defense Gradus GripCheek Rest Vertical 0.9"Cheek Rest Horizontal 1.0"