CMMG MK4/AR15 Upper Receiver Assembly Tungsten
All CMMG upper receivers3 options
- Coyote · Tanfrom $139.99, in stock
- Midnight · Bronzefrom $143.99, in stock
- Tungsten, this page
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CMMG
Overview
The CMMG Mk4 Upper Receiver Assembly in Tungsten is a stripped upper that provides the essential foundation for your AR-15 build. As a crucial component, it allows for the installation of various parts such as the barrel, handguard, and bolt carrier group, ensuring compatibility across AR-15 platforms. This specific color choice is often favored in custom builds aiming for a unique aesthetic or a tactical look.
Specifications
CMMG MK4/AR15 Upper Receiver Assembly Tungsten
3 options
- Coyote · Tanfrom $139.99, in stock
- Midnight · Bronzefrom $143.99, in stock
- Tungsten, this page
Available Merchants(1)
Prices checked
Price Alert
September 2026 on GunPartPicker
CMMG MK4/AR15 Upper Receiver Assembly Tungsten ranked #117 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since May 2026. All time, it ranks #203 of the 1,694 upper receivers builders have added.
Today the one retailer we track has it in stock. Buying today, the lowest price is $139.99 at Optics Planet.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Midwest Industries Quad Rail AR-15 Handguard - 15"
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
PSA AR-15 Barrel 16" 5.56 NATO 1:7 Mid-Length Nitride - 77932227
Wilson Combat AR-15 Lower Receiver Forged
Expo Arms Mid-Length Gas Tube - Stainless Steel
PSA AR-15 Bolt Carrier Group 5.56 Full-Auto Nitride MPI - 516446953
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