The Hard-Line Rail System utilizes a very common 1-3/16" Crowfoot Wrench to torque the barrel nut. This is the most common barrel nut wrench on the market and to reduce unnecessary costs, this wrench is not included with our Rail System. If you need one, this is what you need.
Made of alloy steel & electroplated black zinc
1-3/16" & 1/2" square drive
