I have an "AR tools" storage box that lives where I keep gun parts and project boxes (the collection[s] of new, old, used, modified, and/or broken small parts and sights/rings/bases for any given project gun).
Other tools get used far more often, so I keep the AR tools out of the way.
I feel that I've gotten my money's worth out of them. No need to keep building, 'just to pay them off.' ...But I do have them. So, there isn't much point in letting them go to waste, either.