Description
The Hiperfire X2S MOD-3 takes the same proven internals as the MOD-2 and dresses them up with a flat trigger bow, an included HIPERSHOE finger pad, and a slick Black Nitride finish. It's a two-stage, semi-drop-in unit made for AR-15 and AR-10 rifles, and it also plays nicely with AR-9 pistol caliber carbines and the SIG Sauer MPX. What you get is a short, adjustable first stage that runs 2 to 3 pounds and hits a distinct wall, followed by a clean second stage that breaks with almost no over-travel. Total pull lands at 3.5 to 4.5 pounds depending on which springs you drop in.
What Sets the X2S MOD-3 Apart
The engineering under the hood is where this one earns its keep. Hiperfire's Cam-Over Toggle Engine lets you run a lighter pull without giving up hammer strike energy, which keeps ignition reliable. Radical Sear Mechanics allow the use of heavier hammer springs, and that helps knock out light primer strikes while adding to service life. Soft Start Lock-Up is designed to reduce that flinch you get right after the break, which pays off when you're stretching things out to distance.
Dialing In the MOD-3 to Your Rifle
The kit ships with two sets of springs, green and red, so you can tune the pull weight to your taste. The MOD-3 has a shorter first stage than the MOD-1, giving you a faster, snappier prep before the wall. That flat bow with the adjustable HIPERSHOE lets you fine-tune finger placement and leverage, and if you prefer a bare flat bow you can run it without the shoe entirely.
Getting the X2S MOD-3 Installed
This is a semi-drop-in design, meaning it uses the included hammer and trigger pins rather than a self-contained cassette. It takes a little more attention than a true cassette-style unit, but it's well within reach for anyone comfortable with basic AR work. Machined from quality steel with that hard Black Nitride coating, it's built to hold up to a lot of trigger time.
Key Specifications
- Manufacturer: Hiperfire
- Model: X2S MOD-3
- Manufacturer Part Number: X2SM3
- UPC: 859177004508
- Trigger Type: Two-Stage, Semi-Drop-In
- Trigger Shape: Flat Bow with HIPERSHOE
- Finish: Black Nitride
- Color: Black
- First Stage Pull: 2 to 3 lbs (adjustable, green or red springs)
- Second Stage Wall: 1.5 lbs
- Total Pull Weight: 3.5 to 4.5 lbs
- Fitment: AR-15, AR-10, AR-9/PCC, SIG Sauer MPX
- Material: Steel
- Made In: USA
What’s Included
- X2S MOD-3 two-stage trigger assembly with flat bow
- HIPERSHOE finger pad (installed, removable)
- Green springs
- Red springs
- Hammer and trigger pins
Frequently Asked Questions
Is the X2S MOD-3 a true drop-in trigger?
It's a semi-drop-in design, so it uses the included hammer and trigger pins rather than a self-contained cassette housing. Installation takes a bit more care than a cassette-style unit, but it's manageable for anyone comfortable doing basic AR fire control work. If you've swapped a mil-spec trigger before, you'll be fine here.
How do I adjust the pull weight on the MOD-3?
The kit comes with two sets of springs, green and red, that let you set the first stage anywhere from 2 to 3 pounds. With the fixed 1.5-pound second stage wall, that puts your total pull in the 3.5 to 4.5 pound range. Just pick the spring set that matches the feel you want.
What rifles does the Hiperfire X2S MOD-3 fit?
It's built for AR-15 and AR-10 platform rifles and also works in AR-9 pistol caliber carbines, including the SIG Sauer MPX. As long as your firearm uses standard AR fire control geometry, this trigger is designed to drop right in.
What's the difference between the MOD-3 and the other X2S triggers?
The MOD-3 shares the same sear geometry and pull weights as the MOD-2, but it comes with a flat trigger bow, the HIPERSHOE finger pad, and an upgraded Black Nitride finish instead of manganese phosphate. Compared to the MOD-1, it has a shorter first stage for a faster prep. You can also run the MOD-3 with or without the HIPERSHOE depending on your preference.




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