UTG AR-15 M4/15 Accurizing Buffer Wedge

Sons of Liberty Gun Works AR-15 MIL-SPEC 6 Position Buffer Tube

Z-M Weapons AccuWedge AR15 M16 Stability Interface for Receiver to Stock

Aim Sports Buffer Tube, Anodized Black - XDB15PSTOC

Timber Creek AR Buffer Tube, Black - AR BT BL

Leapers RB-A005, Inc. - UTG Receiver Wedge, Keeps Upper Section Snug and Tight Against Lower

Rock River Arms Carbine Buffer Ar-15 Recoil Reduction and Smooth Cycling

Luth-AR Mil-Spec Dia Carbine Buffer Tube Complete Assembly Fits AR-15 Rifles, with Buffer, Buffer Tube, & Spring, Black 223-M-BAP