These Outer Barrel Nut Washers from Madbull Airsoft are designed to solve most delta ring fitment issues that you may have. If your delta ring does not fit properly then you will have stability issues with your rail and possibly other parts. These washers fit onto your outer barrel and allow your delta ring to properly line up with your gas tube for correct fitment.
Model: Outer Barrel Nut Washer
Compatible With Most Aftermarket Barrels