CMMG MK4/AR15 Stripped Lower Receiver Midnight Bronze
All CMMG lower receivers3 options
- Coyote · Tanfrom $121.99, in stock
- Midnight · Bronze, this page
- Tungstenfrom $131.99, in stock
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CMMG
Overview
The CMMG Mk4/AR15 Stripped Lower Receiver in Midnight Bronze is a stripped lower designed for the AR-15 platform, allowing builders to customize their rifles from the ground up. With its multi-caliber capability, this receiver supports a variety of ammunition types, making it versatile for different shooting applications. Its Cerakote finish not only enhances its aesthetic appeal but also provides a durable surface resistant to wear. This lower is commonly found in builds that prioritize versatility in caliber selection.
Specifications
CMMG MK4/AR15 Stripped Lower Receiver Midnight Bronze
3 options
- Coyote · Tanfrom $121.99, in stock
- Midnight · Bronze, this page
- Tungstenfrom $131.99, in stock
October 2026 on GunPartPicker
CMMG MK4/AR15 Stripped Lower Receiver Midnight Bronze ranked #82 of the 588 lower receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #133 of the 1,222 lower receivers builders have added. Builds with this lower receiver are mostly chambered in 5.56 NATO (69%, then 300 Blackout 15%), split between mid-length (50%) and pistol-length (33%) gas systems, and nearly all AR-15.
It was hard to find in October 2026, in stock on only 6 of the 15 days we checked, and today only MidwayUSA has it in stock. Prices barely moved in October 2026, holding around $131.99, with no real sale all month. Buying today, the lowest price is $131.99 at MidwayUSA, which matches the best price we saw in October.
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
Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger .154"
BCM® MK2 Standard 14.5" Mid Length (ENHANCED Light Weight) Complete Upper Receiver Group w/ MCMR-13 Handguard - Dark Bronze
B5 Systems Type 22 P-Grip - Black
CMMG AR15 Ambi Mag Catch, Black - 55AFF6E
Radian Weapons Talon Ambidextrous Safety Selector 2-Lever KIT - Radian Grey
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
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 Mk4/AR15 Stripped Lower Receiver Midnight Bronze
| Build | Parts | Total |
|---|---|---|
| My future build | 12 | $2865.27 |
| Mr future build | 12 | $2865.27 |
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