The CMMG Mil-Spec Trigger Kit for the AR-15 (CMMG part no. 55AFF97) is a complete set of fire-control parts for a new build or a worn-out trigger group. CMMG bases the design on the original M16 trigger and modifies it for semi-auto use. The result is a reliable single-stage trigger with a familiar, military-style feel. It is a sound choice for a duty-style carbine or a first AR build.

Key Specifications

• The trigger type is single-stage, meaning one continuous pull from rest to release.
• The design is based on the original M16 trigger and modified for semi-auto use.
• The kit includes the hammer and trigger, the two main moving parts of the fire control group.
• It includes the hammer spring and trigger spring that drive and reset those parts.
• A disconnect and disconnect spring are included, which hold the hammer until the trigger resets.
• The hammer and trigger pins are included, so the group is ready to install.

Frequently Asked Questions

Is this a single-stage trigger? Yes. CMMG lists the trigger type as single-stage, based on the original M16 trigger and modified for semi-auto use.

What is included in the trigger kit? The kit includes the hammer, hammer spring, trigger, trigger spring, disconnect, disconnect spring and the hammer and trigger pins.

Buy the CMMG Mil-Spec Trigger Kit for AR-15

A standard single-stage trigger is the right foundation for most AR builds, and a complete kit means nothing is left to source separately. Find more AR triggers and order from our Lubbock, Texas gun shop for fast, direct shipping.