CMMG LOWER MK4/AR15 BLK

The CMMG LOWER MK4/AR15 BLK is a high-quality stripped lower receiver designed to serve as a reliable foundation for AR-15 builds. Crafted from durable forged 7075 T6 aluminum, this receiver offers excellent strength and longevity while maintaining a lightweight profile. Its Armor Black finish provides a sleek, corrosion-resistant surface that enhances both appearance and durability.

Engineered to meet mil-spec standards, the CMMG MK4 lower receiver is compatible with any standard mil-spec lower parts kit, allowing for versatile customization and assembly. This stripped lower is ideal for enthusiasts seeking precision craftsmanship and consistent performance in their AR-15 platform. Whether assembling a new rifle or upgrading an existing build, the CMMG MK4 provides a trusted base component that reflects the brand’s commitment to quality and innovation.