Description
The AK is famous for a lot of things, but a great trigger has never been one of them. That's where the CMC Yella Jacket Combat Trigger Group 2.0 comes in. It's a fully assembled, self-contained cassette that replaces the gritty factory fire control group in your AK47 variant with something that breaks clean at a factory-set 2.5 pounds. Instead of stacking loose hammer, trigger, and disconnector parts, you drop the whole unit in as one piece, and it locks in place.
What Sets the Yella Jacket 2.0 Apart
The magic here is in the machining. CMC runs their critical sear engagement surfaces through a proprietary process that leaves a 1 to 2 RMS surface finish, versus the rougher 32 RMS you get from typical EDM cutting. For comparison, a mirror sits at zero. What that means at the range is a break with no grittiness or creep before the hammer drops, plus the kind of lightning-fast, positive reset that lets you get right back on target for follow-up shots. The full-power hammer spring keeps your ignition reliable too, so a lighter pull doesn't cost you a light primer strike on hard surplus ammo.
The Combat Curved Trigger Bow
The Yella Jacket uses CMC's Combat Curved Trigger, or CCT, which blends the comfort of a classic curved bow with the flat-face indexing CMC is known for. Your finger comes to rest in the same spot every time, so each pull feels identical to the last. It's a shape that suits both range work and competition without forcing you to relearn where your finger sits.
Built to Last in Texas
Every CMC drop-in trigger is hand assembled and hand tested before it ships, and the whole thing is machined from steel and built in Texas. The unit fits AK47 variants and installs with the hammer and trigger pins, making it one of the more painless AK trigger swaps you'll do. With proper care it's built to run for the long haul.
Key Specifications
- Manufacturer: CMC Triggers
- Manufacturer Part Number: 47407-YJ
- Model: Drop-In
- UPC: 850040016574
- Trigger Type: Single-Stage, Drop-In Cassette
- Trigger Bow: Combat Curved Trigger (CCT)
- Pull Weight: 2.5 lbs (factory set)
- Fitment: AK47 / AKM Variants
- Material: Steel
- Finish: Black with Yellow Housing
- Surface Finish: 1-2 RMS on sear engagement surfaces
- Country of Origin: Made in Texas, USA
What’s Included
- CMC Yella Jacket 2.0 drop-in trigger group (single unit)
- Hammer and trigger pins
- Torx/Allen hardware for pin screws
Frequently Asked Questions
Will the Yella Jacket 2.0 fit my AK?
It's built for AK47 and AKM variants and drops in as a single self-contained cassette on most rifles with no fitting needed. Because everything is pre-built and preset, seating it is about as painless as an AK trigger swap gets. If you're running a less common receiver, it's worth confirming your fire control pocket matches a standard AKM layout before you order.
How hard is it to install the CMC drop-in trigger?
You remove the safety, drop the unit into the receiver as one piece, push the hammer and trigger pins in flush, then snug down the provided screws in the pins. After that you reinstall the safety and grip and run a function test to confirm the hammer holds with the safety on. It's a quick job even if you've never swapped an AK trigger before, since there are no loose springs to fight.
Is a 2.5 lb pull too light to be reliable on an AK?
Not with this one. CMC uses a full-power hammer spring, so you keep solid ignition margin even with hard surplus primers while still getting that light, crisp break. A lighter pull like this is popular for precision and competition work because it helps with quicker, more accurate follow-up shots.
Does the Yella Jacket use a shepherd's hook retaining spring?
The cassette design locks in with the trigger and hammer pins and their retaining screws, so you're not wrestling the classic shepherd's hook that frustrates a lot of AK owners. Many folks who run cassette triggers appreciate not having to deal with that loose spring wire at all. Everything you need to secure the unit comes in the box.




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