CMMG Mk57 Complete Lower Group Zeroed Trigger 5.7x28mm FN Midnight Bronze Frame

Description

Product Overview

The CMMG Mk57 Complete Lower Group is an AR-pattern lower receiver assembly configured for 5.7x28mm FN. Finished in Midnight Bronze, it includes CMMG’s Zeroed Trigger and the components needed to complete a compatible semi-automatic firearm lower. The Mk57 design accepts FN P90 pattern magazines, giving builders a practical path to a 5.7x28mm platform with familiar AR-style controls. This product is a lower group only and does not include a barrel, upper receiver, sights, or optic.

Key Features

• Factory CMMG Mk57 complete lower group for 5.7x28mm FN builds
• CMMG Zeroed Trigger provides a refined trigger interface
• Compatible with FN P90 pattern magazines
• AR-pattern control layout supports familiar manual-of-arms
• Midnight Bronze finish adds a distinctive factory appearance
• Lower group configuration is suitable for compatible custom builds

Add the CMMG Mk57 Complete Lower Group to a compatible 5.7x28mm FN build.