Description
The trigger is the one thing you touch every single time you press the gun, and on a stock Shield 45 it leaves plenty of room to improve. This Apex kit tackles that head on by pairing the aluminum Action Enhancement Trigger with the Duty/Carry internals, so you get a better feel and better mechanics working together rather than just cosmetics.
The solid aluminum trigger body replaces the factory hinged trigger with a smooth face and a center-mounted pivoting safety that keeps the factory safety values intact. On the feel side, it trims pre-travel and over-travel by roughly 20 percent, which cleans up that spongy take-up and gives you a more positive, detectable reset for faster, more controlled follow-up shots.
What the Shield 45 Duty/Carry Kit Does to Your Trigger
The Duty/Carry side of this kit is tuned to land in the 5.0 to 5.5 lb range, dropping the pull by about 2 pounds off factory. That's a sweet spot a lot of carry folks aim for: light enough to feel crisp and deliberate, but still weighted for an everyday carry or duty gun. The fully machined sear, sear spring, trigger return spring, and Ultimate Striker Block all work as a system to smooth things out from the moment you touch the trigger to the break.
Fitment and Install Notes for the Apex Shield 45 Kit
This kit is made specifically for the Smith & Wesson M&P Shield 45 and Shield 45 M2.0 in .45 caliber. It is not made for the 9mm or .40 Shield, the Shield 2.0 in 9/40, the Shield EZ, or the Bodyguard, so double-check your model before ordering. It's a drop-in design that a mechanically comfortable owner can handle at home with the included tool, though plenty of people still like to have an armorer or gunsmith do the install and function check. One heads up worth knowing: Apex has been transitioning the sear in this kit from the 2-dot to the #2 sear, and both function correctly, so don't be surprised if you get either one in the box.
Key Specifications
- Manufacturer: Apex Tactical Specialties Inc.
- Manufacturer Part Number: 100-161
- UPC: 854263007104
- Model: Action Enhancement Trigger & Duty/Carry Kit
- Fits: S&W M&P Shield 45 and Shield 45 M2.0 (.45 ACP)
- Trigger Material: Solid aluminum
- Finish: Black
- Trigger Face: Smooth with center-mounted pivoting safety
- Target Pull Weight: Approximately 5.0 to 5.5 lbs
- Pull Weight Reduction: Approximately 2 lbs
- Pre-Travel / Over-Travel Reduction: Approximately 20%
- Installation: Drop-in
What’s Included
- Aluminum Action Enhancement Trigger
- Fully Machined Sear (2-Dot or #2, transitioning)
- Duty/Carry Sear Spring
- Duty/Carry Trigger Return Spring
- Ultimate Striker Block
- Striker Block Spring
- Apex Sight Tool
- Slave Pin
Frequently Asked Questions
Will this Apex kit fit my Shield 45?
It's built specifically for the Smith & Wesson M&P Shield 45 and the Shield 45 M2.0 in .45 caliber. It will not work in the 9mm or .40 Shield, the Shield 2.0 in 9/40, the Shield EZ, or the Bodyguard. Confirm your exact model and caliber before ordering to make sure you get the right kit.
What kind of trigger pull will I get after installing the kit?
The Duty/Carry components are tuned to bring the pull into the 5.0 to 5.5 lb range, which is roughly a 2 lb reduction from the factory setup. You'll also notice shorter over-travel and a more positive, detectable reset. It's a weight and feel that works well for an everyday carry or duty pistol without going overly light.
Can I install this trigger kit myself?
Yes, it's a drop-in design and comes with the Apex sight tool and a slave pin to help with the trigger return spring. Anyone comfortable detail-stripping their Shield can usually handle it with some patience and good instructions. If you'd rather not tackle it, having an armorer or gunsmith do the install and function check is a solid call.
Why did my kit come with a different sear than expected?
Apex has been transitioning the sear in this kit from the 2-dot version to the #2 sear. Both are designed to function correctly in the Shield 45 kit, so either one is normal and nothing to worry about. Just install the sear that comes in your box per the instructions.





Reviews
There are no reviews yet.