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CMMG
Overview
The CMMG Mk4 Upper Receiver Assembly in Charcoal Green is a stripped upper designed specifically for the AR-15 platform, providing a solid foundation for your custom build. Its stripped configuration means you'll have the flexibility to choose your own components, allowing for a tailored fit to your specifications. This upper is frequently used in builds that accommodate multiple calibers, making it a versatile choice for builders looking to create a multi-caliber rifle.
Specifications
Available Merchants(1)
Prices checked
Stock Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG MK4/AR15 Upper Receiver Assembly Charcoal Green to a build in February 2026.
Today the one retailer we track is out of stock. Listed prices start at $157.99 at Optics Planet for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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