Not to be flippant, but the P32 ain’t exactly a tack shooter.
Rear sights on this particular, inexpensive, pocket pistol aren’t exactly a necessary upgrade. It’s a Polaroid - point and shoot. Is the juice worth the squeeze?
For increased accuracy and confidence, you might consider a laser add-on under the trigger guard. There are several available.
~~Anecdotally~~
I have a very early P32, purchased new in about 2000. It shoots about 2-3” at 15 yds, offhand on slow-fire. About 4-6” on fast fire. I wouldn’t feel confident shooting COM beyond 35 yds or so.
I’ve found it eats any ammo I feed it, whether commercial or handloads. The pistol is more reliable than the magazines. Mags are very sensitive.
When I first got it, I was leery about reliability. After purchase, I took it to the range for test-fire. Worked fine. Without cleaning, I took it to a whole day of water-park swimming in the zippered pocket of my swim trunks, loaded.
Stupid? Yes. Would I do it again? No. (no more discussion on my stupid youth).
The next day, I shook out remaining drops of water from the magazine and receiver without disassembly. Ammo that had been mostly underwater for hours. Started shooting again at the range. No issues. When I got home, it was time for a thorough takedown and cleaning. No rust or discoloration on anything inside.
After that, I carried it with confidence as a very, very, small back up. Still have it after 20+years.
Agreed. “Mouse guns” are meant to be pocket carried and sights would just get snagged.
I had a 3AT. Hated that thing. It jammed on everything. Apparently they fixed the issues on the first gen but by then the Ruger LC range came out and never looked at keltec again.
2-3” at 15 yards is pretty good. A lot of full sized pistols do not do any better.