Mad Bull Barrel Nut Washers 4pc

  • Shipping Weight: 0.01kgs
  • 0 Units in Stock
  • Manufactured by: Mad Bull Airsoft


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Convenient set of 4 barrel shims for M4 style rifles
These washers will ensure a contour fit between barrel nut and upper receiver, eliminating misalignment and RIS instability.

Included: - 0.1mm X1
- 0.15mm X1
- 1.5mm X1
- 2mm X1

- Eliminate gap between rail and upper receiver
- Precisely aligns fastening screws on RIS systems
- Ensures stability
- Prevents RIS from angling during installation
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