CMC Triggers AR-15 / AR-10 Drop-In Match Grade Single Stage 3-Gun Trigger - Flat - 2.5lbs

Manufactured by CMC Triggers
SKU: 90503
MPN: 90503
Manufactured by CMC Triggers
8 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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The CMC competition trigger features a non-adjustable flat trigger bow with a 2.5lb pull that breaks like glass. It has almost no take-up and extremely short reset to make shooting fast and easy. The flat trigger gives you more surface area to contact your finger and gives better leverage resulting in a lighter perceived trigger pull. CMC Triggers have invested in a new production and tooling setup that incorporates advanced techniques that help to reduce manufacture time and cost while still providing you with a high quality, reliable trigger that is affordable.

  • Compatible with AR-15 and AR-10 rifles
  • Installs with Mil-Spec .154” trigger pins
  • Single stage 2.5lb trigger pull
  • Non-adjustable flat trigger bow for reliable trigger control
  • Match grade
  • Drop-in, one-piece design made from 8620 alloy steel
  • 100% Manufacturers Lifetime Warranty!
Note: Trigger pull weights are approximate and may vary between rifles

Assembling an AR-15 for the most part is pretty simple; however, some aspects of the process can be frustrating such as installing the takedown detent and spring or trying to put the trigger together. CMC Triggers saw a need to improve on the AR15 trigger installation process and introduced their line of completely self-contained trigger groups. Each trigger is encased in 8620 alloy steel to protect the internal components from dirt and debris, carbon buildup, or anything else that might get into the lower receiver and can be installed in seconds. Just drop it in, install the Mil-Spec trigger pins and you are ready to go. They have a huge selection of triggers that are built for specific applications and preferences. This model is designed for 3-gun competition where a light, single stage trigger is optimum for quick close quarters shooting while still being smooth and crisp for precise long-range shots. Install this match grade trigger and see why many competition shooters are choosing CMC as their go-to fire control group.

With roots in aerospace manufacturing, CMC is perhaps best known as the producer of the original drop-in precision trigger for the AR-15/10 platform. CMC Triggers are dedicated to crafting the finest parts and accessories for law enforcement, military, and civilian use.
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BrandCMC Triggers
Drop InDrop-In
Total Pull Weight1.5 lbs to 5 lbs
Trigger BowFlat
TypeSingle Stage
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

8 reviews

  • 4 stars
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Breaks like glass


I love this trigger, I’ve put in my last 3 builds (one being an AR10). I’m putting it in another AR10 build that I’m starting now as a dedicated hunting rifle.

Great Value


Great trigger, easy to install, No take up tested with my pull gauge and it was right on 2.5 lb


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I have been building AR's with the CMC 3.5lb triggers for years, and have never had any issues.
Recently, I rebuild my long range AR15, and utilized the 2.5lb trigger.

I cannot say enough good things about this trigger. The trigger pull breaks like glass with a crisp "SNAP"!

CMC has great customer service.


I bought two of these triggers. One for a Mega Arms 308 AR build and another for a Christensen Arms CA-15 in 556. The first one in the 308 was great. Light and crisp with no take up. The second one in the 556 had a bit of a click and heavy spot at the very start of travel. I had it for quite a while before I used it so I had to go back directly to CMC to see if they could make it right. They had me send it back and in a few days I had it back in my rifle working perfectly. The customer service was outstanding. Therefore I'm going to still give them 5 stars regardless of the little hiccup because they took care of the issue so quickly and professionally. I will be using CMC triggers in future builds.

Great for the money

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Ordered to replace the stock psa trigger and wow the difference is huge. I’m a 1911 trigger snob and this Is pretty much the equivalent for an ar. Money well spent. The break is so clean my brother who’s a retired army ranger jumped when I brought it downstairs and told him to pull the trigger. He was amazed.

Not impressed....

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I will start with saying this: the trigger I had tried before buying this was a 3.5lb, not the 2.5lb I bought. That being said, I bought this trigger for a more precision type .223 ar I was putting together. Got the rifle set up, put it together, and before taking it out I found that it had a big jump in creep before it would break and it is sticky. This trigger feels absolutely NOTHING like the 3.5lb one I had tried previously to buying this one. I reached out to cmc and for 3 weeks have not heard anything back at all. Think I'll be looking for a new trigger. I'm really not at all happy with this one.

Awesome trigger!


Love this trigger. I'm no marksman but I give a lot of my sub moa 100 yard groups to this bad boy. If you're on the fence BUY IT!

Excellent target trigger (prob the best ive ever used)


Wanted something different for a target 18in SPR AR I built. I love it and Im very happy it shoots great. Functioned perfectly and was easy to install in an Aero lower (safety out, trigger in, safety back in and finally pins in). The break and reset are 10/10.