MADBULL Barrel Nut Washer

MADBULL Barrel Nut Washer

Main Function: to 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.

• Eliminate gap between rail and upper receiver
• Precisely aligns fastening screws on RIS systems
• Ensures stability
• Prevents RIS from angling during installation
• Package include:
  • 1 x 0.1mm 
  • 1 x 0.15mm 
  • 1 x 1.5mm 
  • 1 x 2mm