Your tolerances are getting so tight that if the barrel is not perfectly centered in may not work even if the measurements say it should. Seems like a long shot, but my fingers are crossed for you!
i have the handguard in ar-10 and mostly 1.5" cans but have an ae/ops 12. not sure if that is helpful based on you above pic but let me know and can measure or take pics.
i have the handguard in ar-10 and mostly 1.5" cans but have an ae/ops 12. not sure if that is helpful based on you above pic but let me know and can measure or take pics.