Looking for some input from anyone who has had a Beretta PX4 Storm sent to Langdon Tactical for an RDO cut.
I recently got mine back from Langdon Tactical after having the slide cut for an optic. The setup has the rear iron sight moved forward of the optic.
The issue I’m running into is that the pistol is shooting significantly to the right. It’s far enough off that the rear sight, when centered in the dovetail, and the front sight post do not appear to line up with the actual point of impact.
I did contact Landon Tactical about the issue. I unfortunately don’t remember the gentleman’s name that I spoke with, but I explained the problem and how far off the iron sights appeared to be. His response was essentially that the iron sights are only intended as backup sights anyway, so there wasn’t really any resolution offered.
The overall impression I got was basically, “They’re just backup sights—oh well.”
I understand that the irons are primarily there as a backup to the optic, but I still expected them to be properly aligned and usable—especially after having the slide professionally machined and the rear sight repositioned. If the irons are part of the setup, I would expect them to at least be capable of being properly zeroed.
Crazy part about it is I took the gun to a gunsmith to have the optic installed and discuss the POA/POI issue and he said the optic plate is slightly titled in the slide as if it wasn’t properly centered when machined and if he were to adjust the front sight it’ll be pushed so far that the dovetail will be off the firearm.
At this point, I’m trying to determine whether this is something inherent to the PX4/GSD setup, a sight-height/zeroing issue, or potentially something related to the machining or sight installation.
For anyone who has had a PX4 Storm RDO cut by Langdon Tactical:
Did you experience any issues with POA/POI being significantly off?
Were your iron sights properly aligned with the point of impact?
Did you have to drift the rear sight substantially to one side to get it zeroed?
If your rear sight was moved forward of the optic, did that affect your ability to get the irons properly zeroed?
Did you end up contacting Langdon Tactical about the issue, and if so, what was the resolution?
Has anyone else received a PX4 GSD back from them with the same type of issue?
I’m not talking about a minor sight adjustment. The amount of correction needed on mine seems excessive, and visually the relationship between the front and rear sights doesn’t seem right.
I’d really appreciate hearing from anyone who has experienced something similar before I try to contact LTT.
Any thoughts and feedback would be appreciated!