CMMG Mk57 Lower Group Zeroed Trigger 5.7x28mm FN Tungsten Frame

Description

Product Overview

The CMMG Mk57 Lower Group is a complete lower receiver assembly designed for 5.7x28mm FN builds. This configuration includes CMMG’s Zeroed Trigger and features a Tungsten finish, providing a ready foundation for pairing with a compatible Mk57 upper receiver. As a lower group, it does not include a barrel, sights, optic, or complete upper receiver.

Key Features

• Complete CMMG Mk57 lower group for compatible 5.7x28mm FN builds
• CMMG Zeroed Trigger provides a refined fire-control configuration
• Tungsten finish adds a distinctive appearance
• Designed for use with compatible Mk57 upper receivers and 5.7x28mm magazines
• Lower receiver group configuration simplifies custom firearm assembly

Pair the CMMG Mk57 Lower Group with a compatible upper receiver to begin a 5.7x28mm FN build.