Ameriglo rear sight drifting after some use

[HTM]

I've drilled and tapped for some rear sights before.

Ones with set screws I never use loctite. I put a very small piece of leather into the set screw hole and tighten. Keeps from biting into the slide and applies sufficient pressure to keep the screw from backing out.

[5pins]

Bit of an update. I emailed Ameriglo to ask for any tips they could share. They offered to send me a replacement set and mentioned that this issue is rare on the 43x/48 guns. Told them I had a spare set in hand and would try that first.

Same issue, but instead of the rear sight drifting left, the new rear sight drifted right after about 100 rounds. Am beginning to think the issue lies with the rear sight dovetail.

Will likely need to go with something that has a set screw on the rear sight.

It's not your pistol, it's the sights. I have seen this problem with a batch of them before. Have Ameriglo replace them.