S&T Armament M4/AR-15 Barrel Nut Tool

If you plan to customise your M4/AR-15, the S&T M4/AR-15 Barrel Nut Tool is essential! Made from robust steel, this combination tool provides a wrench for removing barrel nuts at one end and a second wrench for castle nuts at the other. This allows you to change your M4/AR-15 handguard, switching between free-floated handguards, delta-ring-mounted handguards, and more. It also allows you to swap outer barrels, meaning you can turn your CQB build into a DMR and back again, or create the perfect custom build. The castle nut wrench makes fully disassembling a GBBR or accessing a true quick-change spring system far easier, allowing you to rotate the castle nut without marring the finish using pliers, pipe wrenches or other improvised tools. Removing an M4 barrel nut is borderline impossible without one of these tools; if you plan to switch out your AR handguard in the future, make sure you've got a barrel nut tool (aka, armourers' wrench) like this handy! If you want to open up a new realm of custom-built opportunities, the S&T M4/AR-15 Barrel Nut Tool belongs in your toolbox!