Polymer Action Enhancement Kit for Slim Frame Glock®

If you’re shooting a slim-frame Glock® — like the 43, 43X, 48, or 42 — you know the factory trigger can feel a bit mushy and long. This Polymer Action Enhancement Kit is a direct drop-in replacement for the stock trigger, trigger bar, and connector. It cleans up that gritty take-up, shortens the reset, and gives you a crisp, predictable break right around 4.5 lbs. No gunsmithing, no fitting, just a better trigger feel for everyday carry or range use.

Will this fit my Glock®?

This kit is designed specifically for slim-frame Glock® pistols. It fits the following models:

• Glock® 42 (in .380 Auto)
• Glock® 43 (9mm)
• Glock® 43X (9mm)
• Glock® 48 (9mm)
• Glock® 43X MOS and 48 MOS

Note: Not compatible with standard/double-stack Glock® frames (e.g., 17, 19, 26).

What you get with this kit

• Direct drop-in: Replaces your factory trigger, trigger bar, and connector — no filing, sanding, or fitting required.
• Nickel-Teflon coating: The trigger bar and connector are coated for smooth operation and corrosion resistance that lasts.
• Clean rolling break: Averages 4.5 lbs pull weight with a crisp, predictable break and no over-travel.
• Shorter reset: You’ll feel a distinct, audible reset that’s noticeably shorter than stock — helps with faster follow-up shots.
• Center-mounted pivoting safety: Maintains factory safety values, so your carry gun stays drop-safe.
• Made in the USA: 100% American-made parts.

Install difficulty

Difficulty: 2 out of 5 — If you’ve detail-stripped a Glock® before, you can handle this in about 15–20 minutes. You’ll need a punch or small screwdriver for the trigger pin and a non-marring tool (or a Glock® armorer’s tool) to depress the trigger spring. We’ve got an install video on the product page to walk you through it step by step.

Frequently asked questions

Will this work with my Gen5 Glock® 43X MOS?

Yes. The 43X and 48 (including MOS versions) use the slim-frame platform and are fully compatible. Just note this kit does not include an extended slide stop or magazine release — it’s strictly the trigger, bar, and connector.

Do I need to polish anything or use different springs?

No. This kit is designed to drop in and work with your factory springs and internals. Some folks choose to add a lighter striker spring later, but it’s not required. The trigger will function reliably out of the box with stock components.

Is this safe for concealed carry?

Absolutely. The trigger maintains all factory safety features, including the trigger safety blade and drop safety. The pull weight stays above 4 lbs, and the rolling break reduces the chance of a negligent discharge compared to a heavy, creepy factory trigger. Many of our customers carry with this kit daily.

Shipping & Warranty: We ship within 1 business day. This kit comes with the manufacturer’s limited lifetime warranty against defects in materials and workmanship. If you have any issues, give us a call — we’re a family shop and we stand behind what we sell.