The Original Drop-In AR-15 Trigger

AR-15/AR-10

Component Trigger Group

CMC Triggers’ innovative Component Trigger features the same quality materials and design as our OG Drop-in Triggers but without the drop-in housing. These high-performance AR-15 triggers are simple to install with our ground-breaking patented assembly tool. The trigger has a smooth and consistent feel with an exceptionally crisp break and positive reset.
Note: image features triggers with patented assembly tool

Single Stage AR-15 trigger group

The CMC Triggers’ Original Drop-In AR-15 Trigger features a clean, crisp trigger release with predetermined pull weights, which are crucial elements to any trigger group, allowing the shooter’s performance to meet the firearm’s potential.

CMC Triggers’ critical sear engagement surfaces have a proprietary machining process that renders superior surface finish and dimensional control. As compared to our competition, the techniques used to establish a 1-2 RMS surface finish (compared to a mirror which is 0 RMS) out perform manufacturing processes such as EDMing, which leaves a pitty 32 RMS. This makes our sear engagement overlap up to 6-8 times greater than our competitors providing a much safer trigger with enhanced reliability.

CMC’s “Classic” Curved Drop-in Trigger Group is for the shooter who wants a traditional feel. CMC’s patented “Signature” Flat Drop-in Trigger Group allows the shooter’s finger to rest naturally on the shoe ensuring every pull is the same as the one before it. CMC’s CCT™ (Combat Curve Trigger) offers the best of both.

Single Stage | Flat

CMC’s AR-15/AR-10 Patented “Signature” Flat Drop-in Trigger Group is the ultimate for feel and break. With the shooter's finger coming to rest naturally on the shoe, every pull is the same as the one before. The CMC Flat Trigger Bow renders a linear feel unsurpassed by any other trigger bow shape.

Single Stage | CURVED

CMC’s AR-15/AR-10 “Classic” Curved Drop-in Trigger Group is for the shooter who wants a traditional feel. The curved trigger has an exceptionally smooth feel and ultra-clean break. With excellent lock time and lightning-fast positive reset, the CMC Curved Trigger is unsurpassed by any other fire control group.

Single Stage | COMBAT CURVED

CMC’s AR-15 “Hybrid” Combat Curved Trigger (CCT™) has an innovative design that combines the comfort of the classic curve with CMC’s signature flat trigger indexing into one dynamic trigger bow for the modern warfighter.

Two Stage AR-15 Trigger Group

CMC’s Two Stage Trigger replaces your AR’s gritty, heavy factory trigger and gives you a smooth, consistent, two stage pull with a crisp, clean break and short reset.

CMC’S Two Stage Triggers come factory preset with a variety of “set” and “release” stage pull weights, so you can choose a combination that’s best for you. All of our AR-15 Drop-In Triggers are compatible with both AR-15 and AR-10 lowers.

Full-Auto Compatible Trigger Group

Designed with the same quality features found in all CMC Triggers, the CMC AR-15 Full-Auto Compatible Select Fire Drop-in Trigger has been created explicitly with military and law enforcement in mind. Designed for reliable performance that provides the confidence needed in any operational or training situation.

In semi-automatic mode, the CMC Full-Auto Compatible Trigger is a precision trigger that is reliable and accurate. In fully-automatic mode, the CMC Full-Auto Compatible Trigger offers a smooth, continuous trigger pull and abrupt hammer release.

Choosing an AR-15 Trigger

CMC Triggers offers all versions of our Drop-in AR Triggers with configurations for small pin, large pin, and M&P 15-22 composite pin. If you are unsure of the pin diameter needed for your rifle, you can take a measurement by pressing a pin far enough out of the receiver to measure its diameter: .172 Ø for large pin and .154 Ø for small pin.

TRIGGER STAGE TYPE

Single Stage

A single stage trigger requires one range of motion to pull the trigger in order to release the hammer. The benefit of a single stage trigger is that it’s simple. Most shooters agree that a single stage trigger is crisper in the break of the trigger because you don’t feel the initial resistance of the first stage. A majority of shooters prefer the single stage triggers for most applications.

Two Stage

Two stage triggers require the shooter to pull the trigger until it hits a “break wall”, which is a stopping point between the first and second stages. Similar to taking up the slack as some people call it, the two stage trigger then breaks during the second stage after hitting the break wall. The benefit of a two stage trigger is that the shooter knows at exactly what point the trigger will break and is usually preferred on a DMR or marksman style bench-rest rifle.

PULL WEIGHT

CMC Triggers offers a variety of trigger pull weights, from 2.5lb to 6.5lb. A lighter trigger pull can enhance precision and speed, allowing for quicker follow-up shots, making it ideal for competitive shooting and precise applications. Conversely, a heavier pull weight provides an added measure of safety, helping to prevent accidental discharges, particularly beneficial for novice shooters or in home defense situations.

2.5 - 3.5 LB

Lighter trigger pulls (2.5-3.5 pounds) are often preferred for precision and competition shooting. They require less force, which can help improve accuracy and reduce fatigue over long shooting sessions.

3.5 - 4.5 LB

A medium trigger pull weight (3.5-4.5 pounds) is often suitable for hunting. This weight balances the need for precision with the necessity of safety, ensuring reliable performance in the field.

4.5 - 6.5 LB

Heavier trigger pulls (4.5-6.5 pounds) are generally recommended for home defense, tactical situations, or general use. They reduce the likelihood of accidental discharge under stress.

PIN TYPE

CMC Triggers offers all versions of their Drop-in AR Trigger in SMALL PIN, LARGE PIN, and M&P 15-22 COMPOSITE PIN. If you are still unsure of the pin diameter needed for your rifle you can take a measurement by pressing a pin far enough out of the receiver to measure its diameter, .172 Ø for LARGE and .154 Ø for SMALL.

Note: Do not exceed 12 in-lb on the pinset screws. Not applicable to Component Triggers

SMALL PIN (.154 Ø)

If your AR rifle is NOT a Colt or your Colt was produced before 1991 or after 2009 it will take a SMALL PIN.

LARGE PIN (.172 Ø)

Colt is the only AR brand to produce both small and large diameter pins in their triggers. Colt AR-15 rifles produced between 1991 and late 2009 commonly take a LARGE PIN.

M&P 15-22 COMPOSITE

The Smith & Wesson® M&P® 15-22 or any wider than standard receiver will use a SMALL PIN diameter but requires a longer pin length and will take an M&P 15-22 COMPOSITE PIN.

TRIGGER TYPE

FLAT

Ultimate for feel and break. With the Shooter's finger coming to rest naturally on the shoe, every pull is the same as the one before it. CMC’s patented Signature Flat Trigger Bow renders a linear feel unsurpassed by any other trigger bow shape.

CURVED

For the shooter who wants a traditional feel. The Classic Curved Trigger has an exceptionally smooth feel and ultra-clean break. With excellent lock time and lightning-fast positive reset, the CMC Curved Trigger is unsurpassed by any other fire control group.

COMBAT CURVED

The innovative design combines the comfort of the classic curve with CMC’s signature flat trigger indexing into one dynamic trigger bow for the modern warfighter. The CMC CCT™ has an exceptionally smooth feel, ultra-clean break, an exceptional lock time, and lightning-fast reset.

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CMC Triggers and San Tan Tactical Welcome Jeff Scheider as New Vice President of Sales PRESS RELEASE July 2025 – Fort Worth, TX – CMC Triggers and San Tan Tactical, leading innovators in the firearms industry, are pleased to announce the appointment of Jeff Scheider as the new Vice President of Sales, effective July 2025.…

AR-15/AR-10

Component Trigger Group

Component Trigger

Component Trigger

Component Trigger

Single Stage AR-15 trigger group

Single Stage | Flat

PCC Competition Trigger

Competition Trigger

Blue Trigger

Blue Line Trigger

Burnt Bronze Trigger

FDE Trigger

Gold Finger Trigger

ODG Trigger

Purple Trigger

Red Trigger

Single Stage | CURVED

PCC Competition Trigger

Competition Trigger

Blue Trigger

Burnt Bronze Trigger

FDE Trigger

Gold Finger Trigger

ODG Trigger

Pink Trigger

Red Trigger

Southern Teal Trigger

Single Stage | COMBAT CURVED

Competition Trigger

Purple Trigger

CCT Tiger Stripe Trigger

Two Stage AR-15 Trigger Group

Blue Trigger

Competition Trigger

Competition Trigger

Full-Auto Compatible Trigger Group

Full-Auto Compatible Select Fire Trigger

Full-Auto Compatible Select Fire Trigger

Full-Auto Compatible Select Fire Trigger

Full-Auto Compatible Select Fire Trigger

Choosing an AR-15 Trigger

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