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CMC has built its reputation on the original drop-in AR trigger, and this component version takes those exact same internals and drops the housing. You get the trigger, hammer, and disconnector as individual pieces that install the traditional way, straight into your lower receiver. Same 8620 alloy and S7 tool steel, same sear geometry, same DLC finish and tight machined tolerances that made the drop-in famous. The 3.5 lb single-stage pull breaks clean with minimal creep, and the reset is short and tactile enough that follow-up shots feel natural.
The big story here is the patented assembly tool that ships with the trigger. Anyone who has fought with springs and pins on a mil-spec fire control group knows how frustrating a traditional install can be. This tool holds all three pieces in alignment while you set them into the receiver, so you get the clean housing-free look without the spring-juggling headache. It is a genuinely smart bit of engineering, and it opens up component-style installs to folks who normally would not touch one.
The Signature Flat trigger face gives you a consistent indexing point every single pull. Because your finger sits lower on the shoe, you pick up a bit more leverage, so the break feels lighter and more repeatable than the pull weight number alone suggests. Builders chasing tight groups and predictable trigger placement tend to gravitate toward the flat shape, and CMC's version has a knob at the bottom to keep your finger locked in the same spot.
This is a small-pin (0.154 inch) unit, which covers the vast majority of AR-15 and AR-10 receivers out there. The high-power hammer spring keeps lock time short and reliably lights off primers with both commercial and military-grade ammo. Between the tool-guided install and the proven CMC internals, this is a solid path to a match-grade feel on a build where you want the traditional component layout without the drop-in housing.
The component trigger uses the same 8620 alloy and S7 tool steel internals, the same sear geometry, and the same surface finish as CMC's drop-in trigger, but without the enclosed housing. The trigger, hammer, and disconnector install as individual pieces directly into your receiver for a traditional fire control group layout. The included patented assembly tool holds everything in alignment so the install is far less fiddly than a standard mil-spec swap.
This is a small-pin unit with 0.154 inch pins, which covers most AR-15 and AR-10 receivers on the market. If you have a Colt made between 1991 and late 2009, or another wider receiver, you may need a large-pin version instead. You can confirm by pushing a current pin partway out and measuring its diameter with calipers.
No, the pull is factory preset and not user adjustable. CMC tunes each trigger before it leaves the shop to deliver a consistent 3.5 lb break with minimal creep and a fast reset. If it ever needs attention, CMC will service or replace it under their warranty.
The patented tool comes with the trigger and makes installation dramatically easier by keeping the three pieces aligned as you set them into the receiver. You can install a component group the old-fashioned way, but the tool spares you the usual spring-and-pin wrestling match. Most people find it the fastest and cleanest way to get everything seated.
| UPC | 810169560730 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 51503 |
| Color | Black |
| Model | |
| Product Type | Trigger |
| Shipping Weight | 0.19 |
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