CMMGAll CMMG upper receivers

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Midnight Bronze - 55BB40BMB

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Midnight Bronze - 55BB40BMB - Upper Receiver for AR-15 - view 1
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CMMG

Overview

The CMMG Resolute 16.10" Upper is a complete upper receiver designed for AR-15 platforms, featuring a 16.1-inch barrel chambered in 5.56 NATO. With a mid-length gas system and a 1:7 twist rate, this upper optimizes reliability and accuracy, making it suitable for a variety of ammunition types and enhancing overall performance. This upper commonly appears in builds focusing on a mid-length gas system and 5.56 NATO caliber, offering a balance of recoil management and shooter comfort.

Specifications

MPN55BB40BMB
ColorBronze
Twist Rate1:7
Caliber5.56 NATO
Gas System LengthMid-Length
PlatformAR-15
AssemblyComplete
Barrel Length16.1

Available Merchants(1)

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BattleHawk Armory
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$403
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Build history on GunPartPicker

Builders have been adding the CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Midnight Bronze - 55BB40BMB to their builds on GunPartPicker since January 2026. All time, it ranks #466 of the 1,655 upper receivers builders have added.

Today the one retailer we track is out of stock. Listed prices start at $403.20 at BattleHawk Armory for when it comes back.

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