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CMC has been building drop-in trigger groups for the AR platform since 2003, and this curved 2.5 lb match unit is one of their most popular for a reason. It takes the vague, gritty feel of a standard mil-spec trigger and swaps it for a clean, predictable break that makes a real difference on target. Everything lives inside a single self-contained housing, so you drop it into your lower, push through the pins, run a safety check, and you're shooting. No stray springs bouncing across the bench.
The pull is a single-stage design set at the factory to 2.5 lb, with a glass-smooth break and no creep before the hammer drops. The reset is short and positive, which is exactly what you want when you're running follow-up shots in a 3-gun stage or trying to hold a tight group at distance. The curved bow puts your finger where muscle memory expects it, so if you've spent years behind a traditional trigger, this feels right at home. Worth noting the pull weight is preset and not user-adjustable, so what you get out of the box is what you run.
CMC machines these from 8620 alloy steel and S7 tool steel with tolerances held to about a thousandth of an inch, and the sear engagement surfaces get a proprietary finishing process for consistency shot after shot. The hammer is balanced and driven by a rocket wire spring for minimal lock time, and it runs reliably with commercial or military ammunition. It's assembled and tested by hand in Texas.
This is the small pin configuration, meaning it fits receivers using .154 inch trigger and hammer pins. That covers the vast majority of AR-15 and AR-10 style rifles out there, including brands like Aero, BCM, DPMS, and most everything that isn't a specific era of Colt. If you're not sure, push a pin partway out of your lower and measure it. Colt rifles built between 1991 and late 2009 typically need the large pin version instead.
If your rifle uses standard .154 inch trigger and hammer pins, yes. That covers the large majority of AR-15 and AR-10 style lowers on the market. The main exception is Colt rifles produced between 1991 and late 2009, which typically use the large pin instead. When in doubt, push a pin partway out and measure the diameter.
No, the 2.5 lb pull is set at the factory and is not user-adjustable. CMC hand-assembles and tests each unit to deliver a consistent break right out of the box. If you want a different weight, CMC offers this same curved trigger in other pull weights.
It's about as simple as AR work gets. The entire group is self-contained in one housing, so you drop it into the lower, push your pins through, secure them with the included anti-walk pin set, and run a safety and function check. Most folks have it done in a few minutes with basic tools.
The internal performance is the same crisp single-stage break either way. The curved bow follows the traditional mil-spec shape, so it feels familiar if you're used to a factory trigger. The flat version changes finger placement and leverage, which some competitors prefer, so it really comes down to personal feel.
| UPC | 859464006505 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 90501 |
| Color | Black |
| Length | 7.6000 |
| Model | |
| Product Type | Trigger |
| Shipping Weight | 0.25 |
| Style | Single-Stage |
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