The Guntec USA WRENCH-GT AR-15 Armorers Wrench is a must-have for serious firearms enthusiasts. Designed with precision and functionality in mind, this wrench is constructed from durable heat-treated steel, ensuring longevity and reliability for all your AR-15 maintenance needs. Durable heat-treated steel construction Compatible with 5.56 Cal ammunition Efficiently installs and adjusts mil-spec barrel nuts, flash hiders, muzzle brakes, and handguard barrel nuts All-in-one solution for complete disassembly of AR-15 Transform your firearm maintenance with the Guntec USA WRENCH-GT, the ultimate armorer's tool.