Description
CMC has been building drop-in AR triggers longer than most of the competition, and the 93501 is their bread-and-butter curved model in the 5 to 5.5 pound range. If your rifle still wears a gritty factory fire control group, this is one of the easiest ways to sharpen up how it shoots. Everything lives inside a single cassette, so there are no separate springs, pins, or detents to line up on the bench.
What Sets the CMC 93501 Apart
The trigger is machined from 8620 alloy steel and S7 tool steel, with engagement surfaces held to tight tolerances for a consistent feel pull after pull. The result is a single-stage break that stays crisp, a short and positive reset, and minimal lock time, which is exactly what you want when you are trying to make repeatable shots. The 5 to 5.5 pound pull is a preset, non-adjustable weight, landing in a range that suits duty rifles, range guns, and general-purpose builds where you still want a defined trigger feel without going ultra-light.
Installing the Curved Drop-In Trigger
Because the 93501 is a self-contained unit, installation is about as painless as AR upgrades get. It sets into a mil-spec lower with .154 inch (small pin) trigger and hammer pin holes, and it fits both AR-15 and AR-10 / LR-308 pattern receivers using that pin size. You knock out your old fire control group, drop the cassette in, run your pins back through, and you are shooting a better trigger the same afternoon.
The curved bow is the traditional profile most builders grew up on, letting your finger settle naturally in the same spot every time. Between the two-tone black and silver finish, the steel construction, and CMC's Texas-built reputation, the 93501 is a straightforward, reliable upgrade for anyone looking to clean up their trigger without overthinking it.
Key Specifications
- Manufacturer: CMC Triggers
- Manufacturer Part Number: 93501
- Model: Drop-In
- UPC: 850544004121
- Product Type: Trigger
- Trigger Style: Single-Stage, Curved
- Pull Weight: 5-5.5 lbs (preset, non-adjustable)
- Platform: AR-15 / AR-10 / LR-308
- Pin Size: .154 inch (Small Pin)
- Material: 8620 Alloy Steel and S7 Tool Steel
- Finish: Black/Silver
- Design: Self-Contained Drop-In Cassette
What’s Included
- CMC Triggers 93501 self-contained drop-in trigger group
- Trigger and hammer pins
- Installation instructions
Frequently Asked Questions
Will the CMC 93501 fit my AR-15 lower?
It is designed for standard mil-spec AR-15 lowers using .154 inch (small pin) trigger and hammer pin holes. It also works in AR-10 and LR-308 pattern receivers that use the same small pin size. If your lower has larger pins, this cassette will not be the right fit.
Is the pull weight on this trigger adjustable?
No, the 93501 is a preset, non-adjustable trigger set to break in the 5 to 5.5 pound range. That preset design is part of what keeps the pull so consistent from one shot to the next. If you want a lighter or heavier feel, CMC offers other weights in the same drop-in family.
How hard is it to install this drop-in trigger?
It is one of the simpler AR upgrades you can do. Since everything is contained in a single cassette, you just remove your old fire control group, set the CMC unit into the lower, and reinstall the pins. Most folks have it done in a few minutes with basic tools and no gunsmithing.
What is the difference between the curved and flat version of this CMC trigger?
This 93501 uses the traditional curved trigger bow, which lets your finger rest in the same natural position shot after shot. CMC also makes a flat-face version in the same weight range for those who prefer a more linear, straight-back feel. Both deliver the same crisp single-stage break, so it comes down to personal preference.





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