CMC Triggers Drop-In Trigger Group AR-15, LR-308 Two Stage

A CMC Triggers drop-in trigger group for AR-15 and LR-308 rifles brings match-grade trigger control to your build without gunsmithing. This two-stage design ships as a complete, ready-to-install assembly—just drop it into a mil-spec receiver, secure the supplied oversized pins, and you're ready to shoot. CMC engineered this trigger around reliability and speed: full-strength music wire springs ensure fast lock time and consistent ignition with factory or military ammunition, while the hammer, trigger, and disconnector are machined from the hardest, longest-wearing materials available. The housing is 410 stainless steel, built to handle thousands of rounds without degradation. It's the kind of trigger that feels like an upgrade the moment you press it, whether you're running drills at the range or hunting at distance.

The two-stage pull breaks cleanly at 1 lb. for the first stage and 3 lb. for the second—a balance that rewards precision without sacrificing control. The flat trigger profile suits most shooters, and the geometry naturally guides your finger into a consistent position shot after shot. Installation takes minutes; no specialized tools or receiver modifications needed. This is purpose-built for mil-spec small-pin receivers and won't fit Colt AR-15s equipped with a sear block.

If you've been running a factory trigger and wondering what you're missing, this CMC drop-in answers that question. Clean breaks, repeatable let-off, and bulletproof reliability—that's what you get when you choose a trigger designed by shooters, not accountants.

Key Features

• Drop-in design installs in minutes with no gunsmithing
• Two-stage trigger geometry (1 lb. / 3 lb. pull) optimized for precision and control
• Full-strength music wire springs for fast lock time and reliable ignition
• Hardened hammer, trigger, and disconnector for extended service life
• 410 stainless steel housing resists corrosion and wear
• Flat trigger profile promotes consistent finger placement
• Compatible with mil-spec receivers using standard small pins

Specifications

Frequently Asked Questions

Will this trigger fit my AR-15?

This CMC drop-in trigger is designed for mil-spec small-pin receivers, which covers most modern AR-15 builds. However, it does not fit Colt AR-15s equipped with a sear block. If you're unsure about your receiver, we're here to help—reach out and we'll confirm compatibility before you buy.

Do I need a gunsmith to install it?

No. This is a true drop-in: remove your factory trigger group, insert the CMC assembly into the receiver, and install the supplied oversized pins. The whole process takes a few minutes with basic tools.

What's the difference between a one-stage and two-stage trigger?

A two-stage trigger has a distinct take-up (first stage) before the break (second stage). Many shooters prefer it for precision because the first stage doesn't fire the gun—you feel where you are in the trigger, then press through the second stage to break the shot. This CMC breaks at 1 lb. in the first stage and 3 lb. in the second, giving you feedback and control.

Will this work with my LR-308?

Yes. CMC designed this trigger group to fit both AR-15 and LR-308 platforms with mil-spec small-pin receivers.