02-07-2020, 03:22 AM
The inner hole for the GB is 180 deg opposite to the rear set screw but radially aligned. Turn/rotate the GB over so set screw holes are up and measure/align the GB rear edge while the screw hole is centered to the barrel port; use a fine pencil to scribe a match line onto the barrel for that rear edge of GB. Now rotate the GB back around and align it to TDC over the GB hole using that rear-edge line.
Lots of variations on this theme making use of the set screw/GB port alignment.
With the GB rotated you can tell if it centers on the barrel port while snugged up to the shoulder or if it needs a gap to be able to center...
Lots of variations on this theme making use of the set screw/GB port alignment.
With the GB rotated you can tell if it centers on the barrel port while snugged up to the shoulder or if it needs a gap to be able to center...
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