AnimalMother556
6 December 2010, 17:01
Any issues with the heads of the taper pins touching the rail? The FSB was damged by a local smith and the taper pins were loose so I sent it off to have the pins re-drilled and reinstalled properly. Upper is shooting reliably, but the FSB is canted in the direction of barrel nut torque and the pin heads are touching the rail. Don't have the means to re-install the barrel nut myself to see if I can correct the FSB cant. Upper zeroed without issue.