All of the springs were replaced last month along with the mags. Locking block is intact and the pin is still in one piece.If it were me I'd replace the RSA, the locking block pin and the old mags. Might as well start fresh, especially if you don't know the usage history of the gun.
I'd also inspect the locking block (no cracks).
Just out of curiosity, does the existing locking block pin roll flat/even on a hard flat surface, and/or does either end of the pin appear unevenly worn (finish) or slightly peened? Back in '08 Glock developed a wearable parts recommended replacement schedule for LE armorers whose agencies were using .40's, and on that list one of the parts recommended for replacement every 5000 rounds was the locking block pin. The .357 has been said to be a bit harder on guns than even the .40, so it probably wouldn't hurt for a Gen4 & older used .357 Glock to get a fresh LB pin.
Being in 1 piece is a good thing. However, does it roll flat and does either "belled" end have any excessive and/or uneven finish wear and peening?... Locking block is intact and the pin is still in one piece.
I will examine it better tomorrow.Being in 1 piece is a good thing. However, does it roll flat and does either "belled" end have any excessive and/or uneven finish wear and peening?
I was inspecting a used Gen3 G23 for as friend a few years ago. He'd just had it had transferred to him from another cop (original owner) who had wanted to sell it. Supposedly, the original owner had claimed it had only seen "approx 2K" rounds fired.
When I was giving it the once over for my friend I noticed that the LB pin had quite a bit of wear in the finish and appeared noticeably peened on the ends from contact with the LB. It was still straight when I rolled it, but it looked mottled and quite worn on the ends. I gave him a new one, and a new RSA.
Any updates on your situation? My 32 does the same exact thing.I will see what Glock suggests today. I really want this gun to feed everything. It is VERY accurate. I have put almost 500 rounds through it so far and have only had issues with Gold Dots.
I will note, the malfunction has occurred every time on the second round when firing a full mag. Pretty weird.
I have the same problem with Gold Dots in my G31. The problem seems to be the magazine because the bullet nose dives as it's coming up the magazine and hangs on the front edge, not even making it to the feed ramp. Narrower hollowpoints will work better. So I use Federal HST in my G31. I have not seen the same problem in my G32 magazines, but it doesn't surprise me you're having issues with them. I fought it for a while trying different springs and followers, but still had unreliability with Gold Dot in the G31.Unfortunately after replacing all the parts I could think of, It still continues to do it.