Kleen Bore AccuWedge Buffer System for AR15 & M16. These AR 15 Parts from KleenBore work to improve firearm accuracy by eliminating play in the AR15/M16 receiver. The Kleen Bore ACU-1 Accu-Wedge buffers the cycling system in order to reduce wear on impacting surfaces. The Buffer System on this Kleen-Bore Cleaning Kit is easy to install and requires no modification to your firearm. Specifications for Kleen Bore ACU-1 Accu-Wedge AR15/M16 Buffer System: Material: Synthetic Color: Red Gun Type: AR15 M16 Features of Kleen Bore ACU-1 Accu-Wedge AR15/M16 Buffer System: Improves Accuracy. Reduces wear on impacting Surfaces. Easy to install No modifications necessary. Package Contents: Kleen Bore ACU-1 Accu-Wedge AR15/M16 Buffer System