CMMG Upper Receiver Assembly MK4/AR15 Forward Assist Coyote Tan
All CMMG upper receivers3 options
- Coyote · Tan, this page
- Midnight · Bronzeout of stock
- Tungstenout of stock
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CMMG
Overview
The CMMG Upper Receiver Assembly Mk4 is a stripped upper designed for the AR-15 platform, featuring a coyote tan finish that adds a touch of style while maintaining functionality. This assembly allows builders to customize their rifle from the ground up, accommodating various components according to their specific needs. Commonly found in builds with a pistol gas system and chambered for 300 Blackout, this upper receiver is ideal for those looking to create a compact and versatile firearm.
Specifications
CMMG Upper Receiver Assembly MK4/AR15 Forward Assist Coyote Tan
3 options
- Coyote · Tan, this page
- Midnight · Bronzeout of stock
- Tungstenout of stock
Available Merchants(1)
Prices checked
Stock Alert
October 2026 on GunPartPicker
CMMG Upper Receiver Assembly MK4/AR15 Forward Assist Coyote Tan ranked #360 of the 844 upper receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #307 of the 2,053 upper receivers builders have added. Builds with this upper receiver are split between 5.56 NATO (56%) and 300 Blackout (44%), split between pistol-length (50%) and carbine-length (38%) gas systems, and nearly all AR-15.
Today the one retailer we track is out of stock. Listed prices start at $127.99 at Optics Planet for when it comes back.
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
Griffin Armament MK2 AR-15 Ambidextrous Stripped Lower Receiver Flat Dark Earth
Griffin Armament .300 Blackout Hedp AR-15 Barrel - 9.5"
Triggertech AR Diamond Trigger Flat Black
KAK AR15 BCG M16 556 K-SPEC NP3 DE DOWNVENT BOLT C...
Geissele Automatics MK14 Super Modular Rail Handguard 9.3" M-LOK Ddc
Sons of Liberty Gun Works AR-15 Gas Tube Stainless Steel Pistol
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the CMMG Upper Receiver Assembly Mk4/AR15 Forward Assist Coyote Tan
| Build | Parts | Total |
|---|---|---|
 | 25 | $1027.91 |
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