I got to say mines a rattle trap
My PDP 4" Compact! I Hit the range yesterday. This was my first 5 checking the zero on my new Holosun 809t from my last range visit. Shot @ 10 yd, seated, braced on sandbags.My 4" is the same way. There's other videos and comments around that 4" guns from all serial numbers even latest ones are "affected"
My gun is accurate, sights are dead center and it will put holes in a gummy bear sized area all day. The gun stays clean when its fired so the stepped chamber stuff is legit.
I noticed the longer guns have a bushing that might stop them from rattling.
Slide rails on these modern guns have nothing to do with accuracy they just guide the slide when it's in action and have nothing to do with much of anything.
I bought a new PDP, and it does NOT rattle or wiggle at all. I get some noise out of the magazine, but not in the slide. Mine is solid. I would definitely take it to a reliable gunsmith