Description
CMC has been building drop-in trigger groups for the AR platform since 2003, and the Combat Curved single-stage keeps that reputation intact. This one takes the familiar curved trigger face people grew up shooting and adds the consistent finger indexing you usually only get from a flat bow. The result is a hybrid shape that feels natural under the pad of your finger and puts it in the same spot every single press. Pull weight comes factory pre-set at 3.5 pounds, tuned and locked in at the shop rather than left for you to fiddle with.
What Sets the CMC Combat Curved Apart
The break is where this trigger earns its keep. You get a clean, zero-creep press with no gritty takeup before the hammer drops, followed by a short, tactile reset that lets you get back on target fast. A lot of that comes down to how CMC finishes the sear surfaces. They machine them to a mirror-like polish that is far smoother than typical EDM-cut sears, which is a big reason the break feels so glassy. The sear engagement overlap also runs several times greater than many competitors, which adds a healthy margin of reliability.
Built to Handle Range and Match Duty
Inside the self-contained housing you'll find an 8620 alloy steel frame with S7 tool steel internals, held to tight tolerances. A high-power hammer spring keeps lock time short and drives dependable primer ignition, which matters whether you're running a match gun or a rimfire AR upper. The whole unit is hand-assembled and hand-tested before it ships.
Dropping the CMC Combat Curved Into Your Build
Installation is about as simple as AR upgrades get. The one-piece assembly drops into any MIL-SPEC AR-15 or AR-10 lower, and it ships with CMC's own anti-walk pins in the small pin size to lock it in place. Most folks have it swapped in and ready to shoot in around ten minutes, and it's one of the first upgrades worth making on a stock rifle.
Key Specifications
- Manufacturer: CMC Triggers
- Model: Single Stage Combat Curved
- Manufacturer Part Number: 91701
- UPC: 810943031388
- Trigger Type: Single-Stage
- Trigger Face: Combat Curved (hybrid curve/flat)
- Pull Weight: 3.5 lb, factory pre-set, non-adjustable
- Pin Size: Small Pin (.154 in)
- Compatibility: MIL-SPEC AR-15 and AR-10
- Housing Material: 8620 Alloy Steel
- Internal Components: S7 Tool Steel
- Design: Self-contained one-piece drop-in
- Color: Black
- Warranty: Lifetime
What’s Included
- CMC Combat Curved single-stage trigger assembly (self-contained)
- CMC anti-walk pin set (small pin, .154 in)
Frequently Asked Questions
Will the CMC Combat Curved trigger fit my AR-15 and AR-10?
Yes. It's built to drop into any MIL-SPEC AR-15 or AR-10 style lower and works across a wide range of calibers. Just make sure your lower uses the small .154 inch pin size, since this model ships with small anti-walk pins.
Can I adjust the pull weight on this trigger?
No, the 3.5 lb pull is set and tested at the factory and is not user-adjustable. CMC tunes each unit by hand before it ships, so you're getting a dialed-in break right out of the box. If you want a different weight, CMC offers the same platform in other pull weights.
What makes the Combat Curved different from a standard curved or flat trigger?
It's a hybrid bow that keeps the comfortable feel of a classic curved face while adding the consistent finger indexing you normally get from a flat trigger. The contact pad is a touch wider and flatter than a traditional curve, so your finger settles into the same spot every press. It gives you the best of both worlds without having to fully commit to a flat bow.
Is this trigger reliable for rimfire AR uppers like a .22 LR conversion?
It has a strong track record there. The high-power hammer spring keeps lock time short and delivers solid primer ignition, which helps avoid the light strike issues some drop-in triggers run into with rimfire. Plenty of folks run it on .22 LR AR platforms without trouble.






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