Not necessarily. Would I just be looking for a mid length AR10 gas block? Is there various diameters I should be looking for? And finally are there options for handguards/gas blocks combos that won't require me to remove the barrel but? I have a re-acrion rod for AR-15 but I can't imagine that will work for the AR10 platform.I've never seen the sort of handguard that you're looking for to fit an AR10, but that doesn't mean it doesn't exist. Some searching may produce one.
Are you wanting to keep the A2 fixed front sight?