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  1. Barrel Nut Washer

    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.

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  2. Barrel Nut for Noveske NSR-Fit G&P

    Barrel Nut for Noveske NSR-Fit G&P

    This barrel nut is specifically for attaching the Madbull Noveske NSR rail to G&P receivers. Learn More
  3. Shim set

    Shim set

    Shim set Learn More
  4. bn_dd-mfr-aeg_01_1.jpg

    Barrel Nut for Daniel Defense MFR-Fit regular AEG and GNP

    This barrel nut is specifically for attaching the Madbull MFR rail to AEG or G&P receivers Learn More
  5. bn-nv-nsr-aeg-01_1.jpg

    Barrel Nut for Noveske NSR-Fit AEG or GNP

    MAD BULL Airsoft, established in 2004, is world famous for it's Airsoft accessories. Our major focus points are: Airsoft guns, Airsoft Toy Launchers, Airsoft Toy B.B. Showers, and Upgrade kits.We have a very strong R&D team and we put a lot of effort in designing new and exciting new products for the airsoft community. Learn More

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