JE Machine is providing Armorers with a Heavy Duty, Multi-Function, all in one Combo Wrench for the AR Platforms. This uniquely designed tool was created with durability and functionality in mind. With all its essential features, this is the ultimate tool to build, maintain and customize your AR. FeaturesHeavy duty steelBarrel nut wrenchMuzzle break wrenchInstall or disassemble nuts, compensators and buffer tubes3 point castle nut wrenchHeavy duty Ergonomic handle1/2" drive1/4" drive7/16" hex1/4" hex