View More Product Details
Madbull Barrel Nut Washer | MBNW | Internal Upgrades
This Madbull Barrel Nut Washer is made 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.Package...
See More
View Details
