Hello. I have a gen 1 glock 17 that I got in a trade from a member on this site. Awesome gun! It still has the original 2 piece guide rod and black disconnector, leading me to believe it has never had any of the several factory upgrades available over the years. I believe there is also a firing pin upgrade available. Does anyone know of a Glock armorer in the Southern Oregon area who can perform these upgrades? I would rather not ship it to Glock if I can avoid it. Thanks.