CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan

Name: CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan
Brand: CMMG
SKU: 33BFA0CCT
Price: 999.99 USD
Availability: OutOfStock

All CMMG upper receivers

3 options

CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan - Upper Receiver for AR-15 - view 1

CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan - Upper Receiver for AR-15

Click to see full view

Buy Now

CMMG

Overview

The CMMG Resolute Mk3 Upper Receiver is a complete assembly designed for the 8.6 Blackout caliber, featuring a 16.1-inch barrel that strikes a balance between maneuverability and ballistic performance. With a thread pitch of 5/8x24, it allows for the attachment of various muzzle devices, enhancing versatility for different shooting applications. This upper receiver is commonly found in builds aimed at optimizing performance for suppressed shooting and tactical use.

Specifications

MPN33BFA0CCT

AssemblyComplete

ColorBlack

Barrel Length16.1

PlatformAR-15

Caliber8.6 Blackout

Thread Pitch5/8x24

Receiver PatternDPMS high profile

Visit the CMMG Store All CMMG upper receivers

CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan

3 options

Available Merchants(1)

Prices checked Oct 30, 2026

Stock Alert

Get an email when this is back in stock.

Optics Planet

Free shipping

Shipping Speed

Out of Stock

$999.99

Buy Now

Build history on GunPartPicker

Builders on GunPartPicker first added the CMMG Resolute MK3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 X 24 CMMG ZEROED Muzzle Brake Cerakote Coyote Tan to a build in August 2026.

Today the one retailer we track is out of stock. Listed prices start at $999.99 at Optics Planet for when it comes back.

Trending upper receivers →

Updated Oct 30, 2026 · from real builds on GunPartPicker · Prices checked Oct 30, 2026 · refreshed daily across 37 retailers