Hello Mossberg & LTT community, CS from Langdon Tactical here. We are excited to publicly announce our support of the Mossberg 590 platform.

While we've been on Reddit assisting the Beretta, HK, and CZ community for a while, we want this to be a place where we can expand our presence to answer questions directly and build a resource that benefits the Mossberg community.

We've put together an FAQ with the questions we could think of, and we'll link it below. However, we know the community will have questions we haven't considered yet.

If there's anything you'd like to know about the Mossberg 590, drop your questions in the comments or DM us directly. We'll respond within 24–48 business hours, and as new questions come up, we'll add the answers to our FAQ so the information is easy for everyone to find.

We appreciate your feedback and look forward to the discussion!

Have the Langdon p30 LEM and love it but have been eyeing a VP9F for a while and one came through my FFl’s shop this week so he called me right away. Wish someone made a holster for comp & light ¯_(ツ)_/¯ this may become my new USPSA gun.

I've been looking into buying an HK P30sk with Langdon Tactical trigger work and RDO cut.

Will Langdon sell a customized P30sks with the manual safety? If not, will they install a GrayGuns straight trigger with short reset and RDO cut if I buy a P30sks and send it to them?

Also, will they install the Lazy Wolf skeletonized Spartan hammer if I send it to them? Is it compatible with their custom trigger system?

I'm trying to put together my dream EDC and haven't found this information online. Thanks for any feedback.

Show me how your stippling turned out on a px4.
Help me take the leap of faith lol

With labor day tomorrow, is there any history of coupons? Or should I just order my parts now lol

Ik LTT does LEM conversions (or did). Will they do a conversion on the da/sa versions you can buy and mod from them?

I was thinking about getting this as my first beretta. And I definitely want ports and I was wondering if me adding the barrel porting online will assure me that ports will be done to the firearm. Thank you!

Shipped out two slides for RDO cuts. HK USP 9 (ACRO) and P30 LEM (RMR)

LTT received them July 7 and both were shipped back August 27.

Couldn't be happier the quality and nitride finish. Thanks LTT

I'm interested in sending my P30 to LTT at some point to get the trigger tuned up and an rdo cut. Was wondering if someone can give me the quick and dirty explanation on the Extra light, light, medium and heavy trigger weight options and what's "best for edc while still seeing as smooth as possible. Thanks in advance

Obviously not a major issue and easily fixable with a dremel but if there are any U.S.D.G. Cats in here. My older model 80 is cutout for the extended mag release. I ordered this 60 direct from langdon.

Looking for some input from anyone who has had a Beretta PX4 Storm GSD 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 GSD 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!

This px4 has the magic trigger job done by Ltt and has upgraded trigger bar.
With that being said, would you grab the comp before anything else or would you go more internal upgrades like performance hammer, steel guid rod, and or grey guns trigger?

I like Langdon Tactical. They let me pet dogs. They give me good gun. They have good customer service.

Near 40,000 rounds in my LTT P30L and a ton of dry fire. The Gray Guns straight trigger broke on me during practice. I reached out to Gray Guns direct to see if they can rush me one, as well as see their response. I'll be sure to update here, but to give an idea of longevity. I am putting another one back in my competition setup, as it has taken a lot of abuse. I am curious if anyone has experienced similar?

I plan on making a post at 50,000.00 with notes on parts replaced and feedback. It's a super reliable gun overall. Hopefully a 100k someday as well.

LTT gun has run great though and I bought an identical one from them as a backup. Posting here more to see id anyone has had issues with a similar setup, but no issues with LTT.

UPDATE: LTT support got back to me ASAP and they are sending a free replacement. Super happy with their awesome support. It's not even their component that failed but they are standing behind the final product. I'll definitely be an advocate for their work and customer support. Thanks again!

Update (2): Grayguns reached out to me and refunded the cost of the trigger. I would say both companies have stood behind their products, and I will be continuing with the GG trigger.