Dirty Bird ACCU-Wedge AR-15 Upper/Lower Receiver Wedge

Dirty Bird ACCU-Wedge for AR-15 - Fixes Upper / Lower Receiver Slop Prevent Unwanted Movement Between the Upper and Lower Receiver A quick and easy way to improve the fit of your AR upper and lower halves. Don't be annoyed by wiggles and slop when you can get this cost effective solution to ensure a solid mating between your upper and lower. These are trimmable so you can dial in the right amount of tension while still allowing easy operation of the takedown pin.