CMMG

CMMG MK3 Resolute Upper Receiver Group .308 Winchester 16.1in Armor Black

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CMMG Mk3 Resolute Upper Receiver Group .308 Winchester 16.1in Armor Black - Upper Receiver for AR-15 - view 1
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CMMG

Overview

The CMMG MK3 Resolute Upper Receiver Group .308 Winchester 16.1in Armor Black is a upper receiver. Compare prices from multiple merchants and find the best deal.

Specifications

MPN38B7D78AB
Barrel Length16.1
AssemblyComplete
PlatformAR-10
ColorBlack
Caliber.308 Win
Receiver PatternDPMS high profile

Available Merchants(3)

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Optics Planet
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$997
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GritR Sports
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$919
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BattleHawk Armory
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$880
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September 2026 on GunPartPicker

CMMG MK3 Resolute Upper Receiver Group .308 Winchester 16.1in Armor Black ranked #84 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #241 of the 1,683 upper receivers builders have added.

Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 2 of the 3 retailers we track have it in stock. Prices barely moved in September 2026, holding around $918.93, so there haven't been real sales lately. Buying today, the lowest price is $918.93 at GritR Sports, which matches the best price we saw in September.

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Frequently Built With

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

CMMG .308 Win/7.62 Bolt Carrier Group, Black - 38BA423

CMMG .308 Win/7.62 Bolt Carrier Group, Black - 38BA423

Bolt Carrier Group$243in 38% of them
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black

Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black

Charging Handle$50in 13% of them
PSA GEN3 PA10 .308 Complete A2 EPT Rifle Lower With Over Molded Grip

PSA GEN3 PA10 .308 Complete A2 EPT Rifle Lower With Over Molded Grip

Lower Receiver$260in 25% of them
Daniel Defense M-LOK Vertical Foregrip

Daniel Defense M-LOK Vertical Foregrip

Foregrip$35in 13% of them
CMMG Defcan 3 7.62MM/.308 Suppressor

CMMG Defcan 3 7.62MM/.308 Suppressor

Suppressor$878in 25% of them
Warne Skyline Precision 1-Piece STANAG Scope Mount 36mm Rings MSR Ideal Matte Black

Warne Skyline Precision 1-Piece STANAG Scope Mount 36mm Rings MSR Ideal Matte Black

Optic Mount$173in 25% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Gas System

50.3%
Mid-Length50.3%
Carbine25.7%
Pistol11.4%
Rifle11%
Blowback1.3%
Other0.3%

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