Madbull Barrel Nut Washer
Madbull Barrel Nut Washer.
Eliminate gap between rail and upper receiver. These washers will ensure a contour fit between barrel nut and upper receiver, eliminating misalignment and RIS instability. The MB Barrel Nut Washers come in 4 sizes to fit many different configurations.
- 1 x 0.1mm
- 1 x 0.15mm
- 1 x 1.5mm
- 1 x 2mm
- Eliminate gap between rail and upper receiver
- Precisely aligns fastening screws on RIS systems
- Ensures stability
- Prevents RIS from angling during installation