H&K SL8/G36 Barrel Nut Wrench$149.99PriceThis barrel nut wrench is for barrel swaps/barrel installs on the H&K SL8 / G36 line of products, compatible with 1/2 inch and 3/8 inch wrenches. Construction: 1018 Steel 100% made in the USAQuantity*Add to CartSKU: HBNW-1011