The AIM Sports Inc AR15/M4 Combo Wrench Tool is an incredible heavy duty multi tool, extremely handy for installing and removing. This wrenchby AIM Sports Inc is used to install/disassemble nuts, compensators & tubes, and removal/installation of AR-15 barrels. The AIM Sports Inc AR15/M4 Armorer Wrench is made of 4140 powder coated steel and includes a receiver tube stock nut wrench with A1/A2 flash hider slot/receiver extensions. Whether you need to assemble or disassemble, the AIM Sports AR15/M4 Armorer Multi-tool means business!