[Nanaimo Barr]

I was going to put a little sigh paint on it due to it being hard to see in anything less that bright sunlight, but not gonna do anything but give it a good cleaning, I I double checked. the original stock is long gone. the numbers and so forth on the rear sights look to be in good (if dirty) shape. question, should I clean the dirt and crud off the numbers or just clean the barrel and action? (he still wants to use it for hunting)