Metal dust / fragments inside PPS

I'm combing through it as we speak. It looks like my barrel actually has some nicks in it near the feed ramp? What the heck?

Photo by Gordo. Earlier thread.

There is a 50 page thread on this peening somewhere back along the line. It is where I lifted this photo that someone posted. Trigger bar hitting the edge of the chamber as I remember. A lot of discussion on how to remedy this. Seems it is caused by the "horn" that is on the top of the trigger bar whose purpose is to engage the firing pin block....so you can't exactly just grind it off. Apparently some PPS pistols do this and others don't.

Pistols get pretty dirty from firing....unburned powder and burned powder can look like metal....a small magnet will sort that out. On pistols I shoot a lot I clean them with spray cleaner, wiggle the parts and spray some more. Blow dry. Then spray with something like Remington Rem oil and blow the excess of that out....gets in all the cracks and crevices. Then I lube as appropriate to the firearm.

That banging sure doesn't look good. Guess the smaller the pistol the harder to design. 1917

https://www.waltherforums.com/forum/pps/70650-pps-m2-barrel-peened-near-feed-ramp.html

About 70 pages. If you guys would purchase Oldfart and me one of these we'd really try hard to sort it out and I'm sure we could. If we couldn't....thanks in advance for the pistols. I'ma and 1917

In that 70 something page thread, I posed that the PPS m2 trigger bar was tilting during the cycle due to the m2 not having the same trigger bar guide channel at the sear block to constrain the cruciform on the left hand side. By tilting the rear , the front end swings toward the pistol centerline and clips, peens the barrel as it clears into the barrel right hand slot.
I noticed that the pps trigger bar ( for trigger block actuation) near the barrel must stay lined up with the barrel side cut at the Right Hand Side) otherwise the trigger bar can hit and peen the barrel.
I also compared the drawings for the pps m1 m2 to a Block 19 (Glock 19 some humor) and noticed the Glock trigger bar at the trigger block end never gets as far forward as the pps design.
The pps design is more compact, so Walther has the trigger bar hug the barrel.

The Glock design also has a more pronounced channel for the trigger bar cruciform to serve as a guide.
I suspect that this occurs in some PPS m2 and not so much or at all with others is related to assembly fit at the sear block internals and could be remedied by fitting and hand cycle check at the shop.

My pps m1 does not show barrel peening, but the trigger bar actuation area shows polished shine from some contact with the barrel.