Hi Scara,
Do you know any current source for SIG P6 parts? My son has one, but the extractor broke, and he hasn't been able to find a replacement extractor for it. Also, if you know a source for the replacement springs you mention, that would also be helpful.
-Bob B.
The springs can be had at these sites: http://www.topgunsupply.com/gun-parts/sig-sauer-parts/shop-sig-sauer-gun-parts-by-model/sig-sauer-p225-gun-parts.html?sort_direction=1 or https://www.gunsprings.com/SIG-SAUER%20%28SIGARMS%29/P-225,%20P-228,%20P-229/cID1/mID4/dID253#295
Make sure you don't get the plastic base ones, as they are for newer SIGs. Also make sure that you get the hammer springs and not any others. I put the 19 pound spring in my SIG, as the older designs require a somewhat heavier spring than the newer ones because the newer designs have better leverage. I don't think that it would be overly problematic to use say the 16 pound spring, but I went with the 19 pounder. You can always buy the pack to experiment. Just be aware that switching out the springs is in my opinion a two-person job. Also, when he does switch them out, he should be aware that there's a spot where it feels like the mainspring arm goes when he reinserts it, and the place where it actually goes is a little further back. I actually have the 16, 17, and 18 pound springs on hand still. If you want I can ship them to you, though I am very busy right now, and it could be a while before I can get to it. You can also find other SIG P225 parts at http://www.topgunsupply.com/gun-parts/sig-sauer-parts/shop-sig-sauer-gun-parts-by-model/sig-sauer-p225-gun-parts.html?sort_direction=1. They have the extractor listed, though it's out of stock. You can always sign up for notifications, or you can email and ask if they expect to have them and when.
One great resource is SigForum. You or your son can go there and ask questions, and Bruce Gray of Grayguns is known to step in and offer advice or help. He likes the P225, and he and his shop are great at working on SIGs.