By simply installing the Accu-Wedge underneath the takedown pin lug on the upper receiver, the "slop" found on many AR-15 rifles can be reduced or eliminated. Removal of the slop will result in increased accuracy and more reliable feeding.
1.The Accu-Wedge buffers help promote better accuracy by making the upper and lower receivers fit together more tightly and securely.
2.Upon opening the upper receiver, drop the rubber wedge behind the push pin in the rear of the lower.
3.Once installed, any play or rattling will be eliminated.
6.Fits: AR-15, M16, M4