As long as you've stripped all the finish off, you may want to see what you can do about milling off those hard to see sights and installing some night sights. Shouldn't be harder than having a gunsmith mill a dovetail notch into it. Also, check out http://makarov.com/ for a stronger firing pin, new springs, etc.

http://makarov.com/cart/52parts.htm
http://makarov.com/cart/52barrels.htm