Two Stage Trigger Curved Large Pin 1Lb Set 3Lb Release

If you're running a Colt large-pin lower receiver—especially one of the millions manufactured between 1991 and 2009—you know that finding a quality aftermarket trigger can be frustrating. Most modern AR-15 triggers are engineered for standard 0.172-inch pin holes, but Colt's legacy design requires something different. The CMC Triggers two-stage trigger with curved bow and large-pin compatibility solves that problem without forcing you to modify your receiver or settle for subpar parts.

This is a completely drop-in trigger: no fitting, no gunsmithing, no guesswork. CMC hand-assembles each unit at their facility and function-tests it before it ships, so you get a trigger that's ready to install and shoot. The two-stage design gives you a clean, predictable break with a 1-pound first stage and a 3-pound release, delivering the kind of refined trigger control that matters whether you're punching paper at the range or taking precise shots downrange. The curved trigger bow suits shooters who prefer a traditional profile.

This trigger is engineered specifically for Colt large-pin receivers—the ones with 0.172-inch diameter trigger and hammer pin holes. Before ordering, confirm your receiver's pin diameter; this trigger will not work in standard AR-15 platforms. Every set ships with anti-walk pins to keep your trigger group secure and functioning reliably for years.

Key Features

• Two-stage trigger design with 1-pound first stage and 3-pound release
• Curved trigger bow for traditional ergonomics
• Engineered for Colt large-pin lower receivers (0.172-inch pin diameter)
• Completely drop-in installation—no receiver modification required
• Hand-assembled and function-tested by CMC
• Includes anti-walk pins to prevent pin drift

Specifications

Frequently Asked Questions

Will this trigger fit my AR-15 lower receiver?

This trigger is designed exclusively for Colt large-pin lower receivers with 0.172-inch diameter trigger and hammer pin holes. Colt manufactured receivers with this pin diameter from 1991 to 2009. Standard AR-15 receivers use different pin dimensions and will not accept this trigger. Verify your receiver's pin diameter before ordering.

Do I need to modify my lower receiver to install this trigger?

No. This is a completely drop-in trigger—no fitting, drilling, or modification required. Simply remove your existing trigger group, install the new CMC trigger, and secure it with the included anti-walk pins.

What's the difference between the 1-pound set and 3-pound release?

This trigger has a two-stage design: the first stage (the initial take-up before you feel resistance) weighs 1 pound, and the second stage (the final break point) is 3 pounds. This gives you a light, clean break that many shooters prefer for precision shooting and range work.

Is this trigger assembly pre-tested?

Yes. Every CMC trigger is hand-assembled at their facility and function-tested before shipment to ensure reliability and performance out of the box.