I have a new-to-me used P-3AT with an unkown number of rounds through it. I think I would like to get a complete set of replacement springs so that I know they are all in good shape. I figured I would also pick up a new extractor, extractor leaf spring and franken bolt. Is there anything else I should consider adding to my order? Also I see where you can order magazines and the like online through the Kel-Tec store-- is there anything like that for parts or should I call them to place the order?