Barrel nut wrench for Smith & Wesson 422/622/2206/2214. Precision machined, hardened and hot blued alloy steel body with brass pilot. 7/16" hex allows use of torque wrench, or any tool such as a ratchet and socket.
This is a great tool to have. Improvised tools may not be tightening your nut up correctly. Made in USA!
The tool is very straight forward to use, the biggest thing to remember is that the more downward pressure to keep the lugs on the wrench engaged with the nut slot, the better!