After several thousand trigger jobs on Beretta 92s and PX4s, LTT has the process down to a formula. We now offer what we call Trigger Job in a Bag. Purchase this kit to receive all of the important parts involved in a trigger job that are pre-polished and stoned to give you close to the same trigger job you would get if you sent it to us.
In August 2025, LTT switched over to a newly designed optimized performance hammer to optimize total trigger job performance in every way with improved sear notch geometry, reduced pre-travel distance, faster lock time, and better firing pin indent with lighter hammer springs. We believe this kit set-up gives you the best Trigger Job Performance and stand behind this hammer design, which has been over a year in development and manufacturing.
The PX4 Trigger Job in a bag works in the PX4 Full-Size and Compact 9mm models and .40 S&W.
The PX4 TJIB had a price increase in November 2025 due to the price of steel and imports.
PX4 Trigger Job in a bag includes
Lead Time 3 to 5 business days
PLEASE NOTE This kit MAY require some fitting for proper install and function - please make sure to watch the install instructions video, see below for the link. We recommend that this kit be installed by a competent gunsmith. No returns will be accepted on opened kits.
Check out our YouTube page for install instructions
DISCLAIMER We recommend that this product as well as all other firearms parts and kits sold by Langdon Tactical be installed by a competent pistolsmith. No liability is expressed or implied for ANY damage or injury which may result from improper installation or use of this product. Installation of any firearm parts may limit or void the manufacturer's warranty. We strongly recommend that the safety and operation of your modified handgun be thoroughly checked by an accredited gunsmith prior to use.
Please reference our Terms and Conditions. Due to the complexities of complying with the Federal warranty law, Langdon Tactical Technology, Inc. does not offer a written warranty. We continue to stand behind our products and services, and to care for our customers, but we cannot make guarantees or warranties of any kind. This general statement of policies and disclaimers is effective January 1, 2016.
I have these in all my 92’s and knew this would be a must for my new PX4. Everything comes assembled and lubed, so you can drop this in and be shooting in minutes. There is a shortcut to not having to remove the back strap, so make sure to find the right video!
I LOVE the Beretta PX4. It is my everyday carry and even in its stock configuration it is an outstanding firearm. However, this trigger makes this thing feel like my competition gun. The installation is easy with the video tutorial and the results are absolutely fantastic. I can not recommend this product or any Langdon Tactical product enough. Great company, great people, great products. 10/10.
Just installed the Trigger Job in a Bag. It took about 5 minutes to do the install, glad I didn't pay someone to do the job. All I can say is wow. I don't have a trigger scale so I can't say what the pull changed. It is however much smoother and lighter. Can't wait to get to the range.
I was able to purchase the PX4 Compact from a local gun store on Beretta Blue Label (I am retired military) for a good price. The stock trigger was okay, but I had the PX4 Carry from Langdon and had seen the difference between the stock trigger and the LTT Trigger. As a result I elected to purchase and install the trigger job in a bag with the Langdon Optimized trigger bar. The installation was straight forward, no special tools or skills needed. The difference in the feel of the trigger compared to the stock trigger was night and day. It was so good I chose to invest in the Optimized trigger bar for my LTT PX4 Carry which I had purchased without the optimized trigger bar. The Double Action pull is so smooth (7.5 lb) on both that I do much of my shooting DA in order to improve my trigger control and discipline. I cannot give a higher recommendation to this item. It was worth every penny.
Much easier and quicker installation than anticipated thanks to the video, and improved all aspects of what was already a nice (but heavy and stacking) stock trigger pull on a vanilla PX4 Compact. I went with the 12 pound hammer spring as I do like some resistance (not a competition gun). SA is way lighter, while DA is smoother and a bit lighter but still feels very safe for carry purposes.
Better than I imagined!
Great trigger and easy install
Easy to install and improves the trigger remarkably so.
Smooth 8 lb. double action pull. Crisp light single action pull. Amazing reset. No more to say.
I have these in all my 92’s and knew this would be a must for my new PX4. Everything comes assembled and lubed, so you can drop this in and be shooting in minutes. There is a shortcut to not having to remove the back strap, so make sure to find the right video!
I LOVE the Beretta PX4. It is my everyday carry and even in its stock configuration it is an outstanding firearm. However, this trigger makes this thing feel like my competition gun. The installation is easy with the video tutorial and the results are absolutely fantastic. I can not recommend this product or any Langdon Tactical product enough. Great company, great people, great products. 10/10.
Just installed the Trigger Job in a Bag. It took about 5 minutes to do the install, glad I didn't pay someone to do the job. All I can say is wow. I don't have a trigger scale so I can't say what the pull changed. It is however much smoother and lighter. Can't wait to get to the range.
I was able to purchase the PX4 Compact from a local gun store on Beretta Blue Label (I am retired military) for a good price. The stock trigger was okay, but I had the PX4 Carry from Langdon and had seen the difference between the stock trigger and the LTT Trigger. As a result I elected to purchase and install the trigger job in a bag with the Langdon Optimized trigger bar. The installation was straight forward, no special tools or skills needed. The difference in the feel of the trigger compared to the stock trigger was night and day. It was so good I chose to invest in the Optimized trigger bar for my LTT PX4 Carry which I had purchased without the optimized trigger bar. The Double Action pull is so smooth (7.5 lb) on both that I do much of my shooting DA in order to improve my trigger control and discipline. I cannot give a higher recommendation to this item. It was worth every penny.
Much easier and quicker installation than anticipated thanks to the video, and improved all aspects of what was already a nice (but heavy and stacking) stock trigger pull on a vanilla PX4 Compact. I went with the 12 pound hammer spring as I do like some resistance (not a competition gun). SA is way lighter, while DA is smoother and a bit lighter but still feels very safe for carry purposes.
Better than I imagined!
Great trigger and easy install
Easy to install and improves the trigger remarkably so.
Smooth 8 lb. double action pull. Crisp light single action pull. Amazing reset. No more to say.
