to me, it means AFTER it has been cleaned, moa (or less) groups with at least one brand / style / weight of factory ammo. i don't care where on the target it hits, that is just sight alignment, and can be dealt with easily enough. but if it will not hold good groups, something has to be done, or a different rifle installed under those sights! on a pistol, 3" groups @ 21 feet, reguardless of the ammo. if it has a scope, then 3" groups @ 50 yards with at least 1 factory ammo.