Cmmg 55Ca7Fb Zeroed Drop-In Trigger

The CMMG ZEROED Drop-In Trigger is a single-stage AR trigger engineered to fire even the hardest-to-ignite steel case primers without compromise. If you've wrestled with heavy, creepy triggers or endured excessive reset travel, this is the fix: a straightforward upgrade that installs into your existing platform with zero gunsmithing. Whether you're building a compact PDW or dialing in a precision long-range gun, the ZEROED delivers consistent performance across AR-15, AR-10/LR-308, Mk47, and DISSENT platforms.

The real appeal here is simplicity paired with reliability. A 4.5 lb pull weight keeps the trigger light enough for clean breaks without sacrificing the trigger control you need in a self-defense or hunting rifle. Single-stage operation means no staged break confusion—just press and fire. The short reset lets you get back on target fast, and the crisp break eliminates that mushy letdown that throws off your shot. Anti-walk trigger pins are included, so the trigger stays put and doesn't migrate under recoil.

Drop-in installation means no fitting, no custom work. Strip your lower, swap out the fire control group, and you're done. That accessibility makes it a smart choice for shooters who want a tangible upgrade without the hassle or expense of a full trigger job or gunsmith visit.

Key Features

• Single-stage trigger for consistent, predictable breaks
• 4.5 lb pull weight—light and responsive
• Reliable ignition of steel case and hard-to-fire primers
• Short reset travel for fast follow-up shots
• Crisp break eliminates creep and mushy letoff
• Drop-in design; no fitting or gunsmith work required
• Anti-walk trigger pins included to prevent pin migration
• Compatible with AR-15, AR-10/LR-308, Mk47, and DISSENT platforms

Specifications

Frequently Asked Questions

What AR platforms does the CMMG ZEROED trigger fit?

The ZEROED is compatible with AR-15, AR-10/LR-308, Mk47, and DISSENT platforms. If you're building on a different platform, confirm compatibility before ordering.

Is this a drop-in trigger that requires gunsmith installation?

No. The ZEROED is designed as a drop-in trigger for your existing lower receiver. Installation is straightforward and does not require a gunsmith or special tools beyond what you'd normally use to disassemble your fire control group.

What's the trigger pull weight, and will it fire steel case ammo?

The pull weight is 4–4.5 lb. The ZEROED trigger is specifically engineered to reliably ignite even hard-to-fire steel case primers, making it a good choice if you shoot a lot of surplus or budget ammunition.

What's included in the box?

The trigger ships with anti-walk trigger pins to prevent pin migration under recoil, so you don't need to source those separately.