I wouldn't worry about finding parts for the P6. Just after a quick look at www.gunbroker.com, there are mags available (although a little pricey at about $50each). I have wanted to get my hands on a P6. There are plenty of people who have gotten the police guns with some holster wear, but they were very mechanically sound. I personally wouldn't hesitate to purchase a P6. I say, if it feels good in your hands (if you can get a hold of one), then go for it. I don't know about the P239, so I can't make a comparison, but if it were me, I personally wouldn't look any further than the P6. Others who may have experience with both should chime in though. Good luck!

-Jeff-

My P239 9mm DA/SA is very accurate,and 100% reliable with about 1000 rds thru it.Trigger is very smooth in DA and crisp in SA.

Seems like the P6 is a little hit and miss with its ability to reliably feed hollow points,And the triggers are a little heavy.

I think the only advantage the P6 has is price,the P239 is smaller and should be easier to conceal.Mine carries comfortably in a MSVM2,Although I usually choose to carry My G26.

A later model P6 (mine is from 1997) has the later barrel that feeds any ammo. I have a P239 as well and they're both fine single-stack guns. The P239 is of course more refined with a better fit & finish but it's also considerably more expensive. My only gripe about the P6 is the high cost of mags - hopefully Sig will unload another batch soon...

Roadrash and NGIB have covered it pretty well. My 1980 vintage P6 is the old stamped slide and I won't shoot +p ammo out of it. The newer P239 with a milled slide can handle +p.