CMMG 55CA7FB Zeroed Drop-In AR-15 Trigger Assembly - Single Stage

The CMMG 55CA7FB Zeroed Drop-In Trigger transforms AR-15 performance with a crisp, consistent pull weight and minimal reset. This single-stage trigger assembly eliminates the factory trigger's gritty feel and excessive overtravel, delivering precision that competitive shooters and tactical professionals demand.

What Makes This Different

Unlike standard mil-spec triggers that require individual component fitting, the Zeroed system arrives as a complete drop-in cassette. The self-contained design maintains precise tolerances between hammer, trigger, and disconnector components. Factory testing ensures each unit meets CMMG's 4.5-pound pull weight specification with less than 0.2-pound variation between samples.

Key Features

• Single-stage design with 4.5-pound pull weight for consistent shot placement
• Drop-in cassette installation requires no gunsmithing or individual part fitting
• Hardened steel components with nickel-boron coating resist wear and corrosion
• Compatible with standard AR-15 lower receivers and .223/5.56 chamberings
• Anti-walk pins included prevent trigger movement during extended firing
• Reduced overtravel and shorter reset improve follow-up shot speed
• Made in USA with lifetime warranty against manufacturing defects

Range testing demonstrates consistent performance across temperature extremes and high round counts. The nickel-boron coating maintains smooth operation even with minimal lubrication, making this trigger suitable for duty use, competition shooting, and precision rifle applications. The crisp break point eliminates guesswork during target engagement, while the positive reset provides tactile feedback for rapid follow-up shots.

Technical Specs

• Pull Weight: 4.5 pounds (±0.2 pounds)
• Trigger Type: Single-stage, non-adjustable
• Compatibility: AR-15 platform rifles and pistols
• Material: Hardened steel with nickel-boron coating
• Installation: Drop-in cassette with anti-walk pins
• Dimensions: Fits standard AR-15 trigger pocket
• Country of Origin: United States
• Warranty: Lifetime against manufacturing defects

This trigger upgrade delivers measurable improvements in accuracy and shooting speed without requiring permanent modifications to the host firearm. CMMG's established reputation for reliability and the drop-in installation make this an intelligent choice for shooters seeking enhanced performance with minimal complexity.