The ODIN WorksA(R) Zulu 2.0 AR-15 Stock delivers unique looks and a full slate of features to take your AR to the next level. Suitable for rifles and carbines, the Zulu 2.0 is adjustable for both length-of-pull and cast, and features a reversible QD cup for sling attachment. Plus, it comes with the innovative Secondary Buffer System composed of a plunger and spring. Instead of one spring, you now have 2 opposing springs to help smooth out the action and dampen felt recoil-so you stay on target. The Zulu 2.0 works with all standard AR-15 lowers, as well as AR-10 buffers and springs. It includes everything you need-including the wrenches and screws-to get it installed and working properly. Improvements over the Zulu 1.0: Buffer tube is an inch longer to accommodate taller shooters Buffer tube diameter has increased to work with a broader range of stocks Secondary Buffer System has been addedFeatures: Adjustable length-of-pull (12.75-15.88") and cast Padded intermediate-length buffer tube with end plate Reversible QD cup Secondary Buffer System reduces felt recoil Made from 6061 aluminum Works with standard AR-15 lowers, as well as AR-10 buffers and springs Weighs 19.7 oz. Includes Stock, buffer tube, Secondary Buffer System, and end plate. Buffer spring and buffer not included. Order today!