Langdon Tactical Technology has all kinds of performance upgrade parts for the Beretta Px4 Storm pistols which are stellar additions/upgrades for one of my favorite carry guns. I have owned and carried Px4's since way before they were popular and it's nice to see them finally getting the attention they deserve from the greater DA/SA Hammer Fired pistol aficionados. I have a full size and a subcompact but the subcompact, where it's specifics differ from the full size and compact with their rotating barrels, is a different Px4. LTT offers a Trigger Job in a Bag which gives a polished and tweaked trigger group chassis with choice of hammers from Competition to Spurless to Factory, an optimised performance trigger bar that modifies the DA and SA trigger pulls to make them buttery slick and crisp and shortens the SA reset to make the gun fast. Really fast and crisp.

I added red dots to both my PX4's and then started on upgrading everything else - added full size slide catch/release levers, oversized the mag release buttons, flat steel triggers, Pachmayr Tactical Grip Gloves, and upgraded the trigger groups but the TJIAB does not work in a subcompact due to a different sized chassis frame and hammer spring guides. The addition of the TJIAB in the full size was so impressive I wanted it in the subcompact. LTT told me no way *but* they could do a trigger job on the subcompact if I sent it in. Not wanting to risk sending my beloved pistol out and risk it disappearing in shipping I decided to purchase the TJIAB and modify it as needed to work in the subcompact.

So, to make an already too long post a little shorter, I swapped the hammer, hammer pivot pin, the sear, and the hammer spring guide(s) to the existing subcompact trigger group chassis and reinstalled the #11 hammer spring and optimised performance trigger bar and reinstalled the whole mess into the pistol. And now I have my subcompact Px4 with an LTT Trigger Job in a Bag and super sexy DA and SA pulls, short reset and all the bells and whistles.

So now I'm having a renewed and enhanced love affair with a pistol platform I truly admire *and* I have the tools, skills, and understanding to tear the pistol down to it pins, springs, and levers and get it all back together.

VooDoo

VodoundaVinci wrote: Sat Sep 14, 2024 12:30 pm So, to make an already too long post a little shorter, I swapped the hammer, hammer pivot pin, the sear, and the hammer spring guide(s) to the existing subcompact trigger group chassis and reinstalled the #11 hammer spring and optimised performance trigger bar and reinstalled the whole mess into the pistol. And now I have my subcompact Px4 with an LTT Trigger Job in a Bag and super sexy DA and SA pulls, short reset and all the bells and whistles.

So now I'm having a renewed and enhanced love affair with a pistol platform I truly admire *and* I have the tools, skills, and understanding to tear the pistol down to it pins, springs, and levers and get it all back together.

VooDoo

Based on what you wrote it sounds as if it was strictly a matter of combining the TJIAB with existing parts, with no parts having to be reshaped/modified. Is that the case?

Swapped the hammer, hammer pivot pin, sear, from the new TJIAB assembly into the existing chassis and polished the hammer spring guide as was done in the new TJIAB assembly and re installed onto the new hammer. Hardest part of the whole deal was getting that teeny, tiny pin out and back in on the hammer to mount that spring guide.

I said bad words.

VooDoo

Nice! I love tinkering with my guns. I managed to do the Cajun Gun Works package on the SP-01. Great result. And, no left over parts!

I got an awesome sense of accomplishment having a Langdon Tactical Technology Trigger Job in a Bag in my Px4 subcompact - I'm probably the only one that has one! And I didn't risk my favorite pistol in shipping. I'm all chuffed up about mice elf, that's a fact.

VooDoo

VodoundaVinci wrote: Sat Sep 14, 2024 2:14 pm Swapped the hammer, hammer pivot pin, sear, from the new TJIAB assembly into the existing chassis and polished the hammer spring guide as was done in the new TJIAB assembly and re installed onto the new hammer. Hardest part of the whole deal was getting that teeny, tiny pin out and back in on the hammer to mount that spring guide.

I said bad words.

No doubt! I'm confident I could NEVER get pins that small installed!

Buck13 wrote: Sun Sep 15, 2024 9:14 am No doubt! I'm confident I could NEVER get pins that small installed!

The hardest part was getting them started. I magnetized a pin punch so that the pin would stand on its end and got it placed and started and then punched it into place with that little 1mm silver punch designed for watch disassembly. Had to buy ten of them (Gaad I loveAmazon!) so I now have plenty but for ~$10 it was worth it.


Luckily I had the old trigger group chassis from the Full Size to practice on which really helped. I relied heavily on old skills learned as a camcorder technician and factory trained tech fixing commercial video tape decks. The mechanics of those is all tiny and extremely complex. Bunches of tiny parts and without a schematic to reassemble it's a fools nightmare to try it.

Amazing how good the triggers are now and very surprising for a modular chassis type trigger. Not as good as an old S&W revolver or a Python but almost.

VooDoo

Yup S&W and Colt revolvers are like fine watches, but now days people mostly wear cheap Timex or Citizens watches or just check the time on their mobile phones. The age of polymer makes guns lighter, which cops love because at least US cops carry about 30 pounds of equipment on their belts. I'm sure the Carabinieri and Italian State Police appreciate it because they carry Beretta's, especially female cops. The Beretta family have been making firearms since 1526.

Some of the many reasons I'm a Beretta Aficionado with 5 Berettas in my menagerie. I loved them even before the US Military adopted them as standard sidearms for decades. In polymer pistols, I started with Glocks when we got CCL here in Illinois - loved the low maintenance of polymer and the modularity of the Glock platform but soon reverted back to my DA/SA, Hammer Fired roots for safety considerations.

Being an active person, it was discomfiting to return home from a long dog walk in the Summer to find my carry pistol wet due to perspiration evaporation. Condensation on the pistols. So with a Glock, it's pull the pistol, unload it, and wipe it down with dry and then oiled chamois. Really bugged me jacking rounds in and out of my carry gun as it invites negligent discharges, With the DA/SA Berettas with F type decockers the gun is essentially a brick when the decocker/safety is engaged. So it can be wiped down and returned to it's holster (I always use Kydex carried Appendix) when the holster is dried with a towel.

No more jacking rounds in and out and the polymer frames never invited rust. Loves me some Beretta.

VooDoo