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CMMG MK3, Upper Receiver, 308 Winchester, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black

CMMG MK3, Upper Receiver, 308 Winchester, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black - Upper Receiver for AR-15 - view 1
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CMMG

Overview

The CMMG MK3 Upper Receiver is a stripped upper designed for the AR-10 platform, specifically chambered in .308 Winchester. Constructed from billet 7075-T6 aluminum with a Cerakote finish in Armor Black, this receiver offers a robust foundation for your build while maintaining a sleek appearance. Builders often pair this upper with a mid-length gas system, making it a popular choice for those looking to create a reliable and accurate rifle.

Specifications

MPN38BA22EAB
Receiver TypeBillet
AssemblyStripped
Caliber.308 Win
ColorBlack
PlatformAR-10
Receiver PatternDPMS high profile

Available Merchants(2)

Prices checked

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Optics Planet logo
Optics Planet
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Out of Stock
$280
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BattleHawk Armory
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$304
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Build history on GunPartPicker

Builders have been adding the CMMG MK3, Upper Receiver, 308 Winchester, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black to their builds on GunPartPicker since March 2026. All time, it ranks #466 of the 1,656 upper receivers builders have added.

It was out of stock everywhere we track for all of September 2026, and today none of the 2 retailers we track has it in stock right now. Listed prices start at $279.99 at Optics Planet for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

Ballistic Advantage 20″ .308 Tactical Government Rifle Length AR 10 Barrel, Premium Black

Ballistic Advantage 20″ .308 Tactical Government Rifle Length AR 10 Barrel, Premium Black

Barrel$266in 17% of them
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom

Lower Receiver$155 · out of stockin 17% of them
Aim Sports M-LOK 15" .308 AR-10 Low Profile Free Float Handguard, Black - MTM15L308

Aim Sports M-LOK 15" .308 AR-10 Low Profile Free Float Handguard, Black - MTM15L308

Handguard$100in 17% of them
Sons of Liberty Gun Works Charging Handle, Burnt Bronze - Stylish and Functional Charging Handle - LCH-5.56-BNZ

Sons of Liberty Gun Works Charging Handle, Burnt Bronze - Stylish and Functional Charging Handle - LCH-5.56-BNZ

Charging Handle$90 · out of stockin 17% of them
Wilson Combat .308 Win Bolt Carrier Assembly, Nickel Boron - TR-BCA-NB-308

Wilson Combat .308 Win Bolt Carrier Assembly, Nickel Boron - TR-BCA-NB-308

Bolt Carrier Group$244in 17% of them
CMMG AR-15 Gas Tube Stainless Steel Rifle

CMMG AR-15 Gas Tube Stainless Steel Rifle

Gas Tube$17in 17% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.4%
Mid-Length50.4%
Carbine25.9%
Pistol11.1%
Rifle11%
Blowback1.3%
Other0.3%

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