Machining an AR-15 lower receiver from a raw (“0%”) forging

025a_nextSetup

Moving into the next setup, it's easiest to get a quick alignment using a precision square.  Note the light behind the square to discern if any light is visible between the square and the butt face.

Moving into the next setup, it’s easiest to get a quick alignment using a precision square. Note the light behind the square to discern if any light is visible between the square and the butt face.

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