About this product

Apex Tactical 100161 Action Enhancement Trigger & Duty/Carry Kit – S&W M&P Shield 45

Manufacturer: Apex Tactical Specialties
Part Number: 100161
Price: $165.00
Category: Other Gun Accessories & Parts

If you’re running a Smith & Wesson M&P Shield in .45 ACP — either the original or the M2.0 — and you’ve been thinking the factory trigger could use some work, you’re not wrong. The hinged trigger that comes stock on these pistols is functional, but it’s got a lot of slop, a long reset, and that gritty feel that makes precision shots harder than they need to be. That’s where this Apex Tactical kit comes in.

This isn’t just a trigger shoe swap. Apex put together a complete package: the Action Enhancement Trigger combined with their Duty/Carry Kit. It’s a drop-in affair, meaning you don’t need to send your pistol off to a gunsmith or spend an afternoon filing and fitting parts. If you can field-strip your Shield and work a punch, you can install this in your living room. We sell a lot of these out of our Des Moines shop, and we’ve put them in our own carry guns. They work.

What You’re Getting

First, the trigger itself. Apex replaces that plastic hinged trigger with a solid aluminum body. It’s black, machined clean, and has a smooth face with a center-mounted pivoting safety blade. The safety still works exactly like the factory setup — it won’t let the gun fire unless the blade is depressed — so you’re not losing anything in terms of safety. What you gain is a trigger that reduces pre-travel and over-travel by about 20%. That means less wasted movement before the break, and less barrel dip after it. The pull weight comes in between 5.0 and 5.5 pounds, right in the sweet spot for a defensive pistol. It’s light enough to shoot accurately, heavy enough to stay safe in a holster.

Second, the Duty/Carry Kit. This is the part that smooths out the whole action. Apex re-engineers the sear, the striker block, and the trigger return spring to give you a consistent, clean pull from first shot to last. The reset becomes shorter and more tactile — you’ll feel and hear a positive click when the trigger resets, which makes follow-up shots faster. No more guessing if the trigger is ready to break again. This kit is designed for exactly what the name says: duty use and concealed carry. It’s not a competition trigger set to a hair pull. It’s a working trigger that you can trust when it matters.

Why This Kit for Your Shield 45?

The .45 ACP Shield is a handful of gun. It’s a compact single-stack that throws heavy lead, and the factory trigger doesn’t help you manage that recoil. A long, creepy trigger pull makes it harder to stay on target between shots. This Apex kit shortens the stroke and cleans up the break, so you can focus on your grip and sight alignment instead of fighting the trigger. We’ve had customers come back after shooting their first range session with this kit and say, “I should have done this years ago.” That’s not a sales pitch — it’s what we hear.

Apex Tactical has been making trigger systems for M&P pistols longer than just about anybody. They’re based out of Arizona, but their parts are in guns all over Iowa. We stock their stuff because it works, it’s reliable, and they back it. This kit is no exception.

Installation Notes

Drop-in doesn’t mean no tools. You’ll need a punch for the trigger pin and maybe a small screwdriver. Plan on 20 to 30 minutes if you’re handy, maybe an hour if it’s your first time. There are plenty of videos online, or you can give us a call at the shop and we’ll walk you through it. We’re in Des Moines, right off I-235 — stop in and we’ll show you a completed one on the counter so you can feel the difference before you buy.

Shipping from Iowa Gun Shop

We are a licensed FFL dealer here in Des Moines, Iowa, and we ship to all 50 states. If you’re ordering this kit, it ships direct to your door — no FFL transfer needed for parts. But if you’re buying a complete pistol from us, we’ll coordinate with your local FFL. We ship fast and we pack it right. Whether you’re in Ankeny, West Des Moines, or way out in California, we get your order out the door.

Final Word

If you carry a Shield 45, you owe it to yourself to try this Apex kit. It takes a good gun and makes it better where it counts — the trigger. No hype, no buzzwords. Just a solid trigger job that drops in without a hassle. $165 gets you a trigger that feels like it should have come from the factory this way. Order from Iowa Gun Shop and see what your Shield can really do.

Iowa Gun Shop – Des Moines, Iowa
Licensed FFL Dealer – Shipping Nationwide