Some light marking/wear on the slide is normal, and should not be a cause for worry. Only if you see some serious "denting" of the slide face where the front of the barrel locks into the slide is there any reason to be watchful.Took your advise and added some grease on the rails, thanks. Here is the results of my first range session. Put about 120 rounds through it. Started with the win white box. Read about how they don't work well after I came back from the range. I had some type of failure with every mag I put the white box ammo in. About 60 rounds. FTE, FTF the works. The first few mags of the PMC worked fine. I had few failure with the PMC. By the time I got to the last few mags wasn't happy. To bad I like the gun. By the end, the gun was so dirty that might have been the issue wi the last few mags. Upon disassembly there is a large scoring on the upper portion of the slide inside in front of the ejection port. Is that normal? It now seems harder to pull the slide open all the way too. The guy in the store sold me some magtech. $17. I will try that next and also pick up some federal. All the ammo is 115 grain FMJ. I like the gun I really want it to be reliable enough to carry.
If it stays pretty minor, ok. But if the locking surface of the slide continues to indent/peen, then you will need to contact Kel Tec. The fact that the slide "sticks" at the far end of the recoil retraction may reflect some peening as this is the area that drags on the barrel hood during recoil. If you do have one of the defective slides (a small number did/do exist), then you should be able to just send them the slide and barrel for replacement. Only the aluminum frame is legally a "firearm" so you can send the barrel and slide by USPS or just ask Kel Tec for a shipping label for the entire pistol if that is your choice. Just keep an eye on it, as any significant "peening" issue should be readily apparent by the time you get several hundred rounds through the PF-9.Thanks. I cleaned it up oiled and greased it. Slide is still harder to get back that last 1/8 of an inch. And I do see some slide material growing on the surface of the opening. Not very much though.