CMMG MK4 .223 Remington AR Lower, Black - 55CA102AB
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CMMG
Overview
The CMMG MK4 .223 Remington AR Lower is a stripped lower receiver designed for the AR-15 platform, crafted from durable 7075-T6 aluminum and finished with a Cerakote in black. This lower is compatible with a multi-caliber setup, allowing builders to customize their firearms for various applications. It is a forged design, which adds strength and reliability, making it a solid choice for builds that typically feature a mid-length gas system and utilize the .223 Wylde caliber.
Specifications
Frequently Built With
Based on build data
CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B
Bravo Company M16 Bolt Carrier Group Black
Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A
Cmmg Ar-15 Bolt Catch
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Radian Weapons Ar-15 Raptor/talon L/s Combo Black Anodized
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with 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.
| Product | Category | Times Built Together |
|---|---|---|
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | 11 | |
| Bravo Company M16 Bolt Carrier Group Black | 6 | |
| Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A | 5 | |
| Cmmg Ar-15 Bolt Catch | 5 | |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | 4 | |
| Radian Weapons Ar-15 Raptor/talon L/s Combo Black Anodized | 4 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 66.7% |
| 9mm | 33.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 50% |
| Blowback | 25% |
| Carbine | 25% |
Builds Featuring This Part
See all 4 →Builds in the community that include the CMMG MK4 .223 Remington AR Lower, Black - 55CA102AB
| Build | Parts | Total |
|---|---|---|
 | 20 | $800.03 |
 | 26 | $2808.89 |
 | 11 | $1207.66 |
 | 11 | $1412.54 |
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