Top quality tool - OpticsPlanet Exclusive Midwest Industries OPMOD AR15 Upper Receiver Rod - Nickel

This tool makes it much easier to work on my upper receiver — especially removing/installing and torquing the barrel nut safely, no matter how tight or seized it is. You don't risk damaging your upper receiver or barrel extension index pin. It works by engaging both the barrel extension lugs and the charging handle channel, distributing torque evenly and protecting the index pin.
Build quality is excellent: solid 4140 ordnance-grade steel, no sharp edges. It mounts vertically or horizontally in a standard bench vise, for barrel service/installation, scope mounting/adjustment, muzzle device changes, or anything else needing the upper stabilized.
Fits standard AR-15 platforms with M4/M16 barrel extensions (forged and billet uppers). I got the nickel finish, which as far as I can tell is exclusive to OpticsPlanet — I haven't found this finish new anywhere else. This tool should last forever.
Note: this is NOT a universal tool — confirm it matches your specific barrel extension pattern before buying.