V Seven Port Door Rod AR .308 Grade 5 Titanium Raw Finish Silver

V Seven Port Door Rod AR .308 Grade 5 Titanium Raw Finish Silver. It does this by slightly adjusting the position of the port door. The Port Door Rod is mounted to the upper receiver with the least amount of force possible. When the rod is straight there is very little side pressure applied to the port door. When the rod is canted there is enough spring force to keep the port door rod in place. The port door does this by applying pressure to the "rod" portion of the assembly and causing it to 'l