Lower ReceiversMid-Range
CMMG
CMMG Mk4 Lower Receiver (9 ARC Mags)
Mil-spec AR-15 lower setup for CMMG 9 ARC conversion magazines and 9mm Radial Delayed Blowback uppers.
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Quick Specs
- Price
- $180
- Weight
- N/A
- Brand
- CMMG
- Category
- lower-receiver
Features
- •Standard AR-15 / Mk4 lower layout
- •Uses CMMG 9 ARC conversion magazines
- •Designed around CMMG 9mm RDB upper groups
- •Forged 7075-T6 lower receiver family
- •Standard carbine buffer and action spring setup
Capability Boosts
Reliability+1
Modularity+1
Recommended For
Duty/Patrol+2
duty+2
Home Defense
Competition
Outdoor Defense
first pistol
+13 more
Compatibility Tags
family: pccfamily: ar-patternplatform: custom-ar-9caliber: 9mmmag-type: cmmg-arctrigger: ar-fcgstock-interface: ar-buffer-tubear9-system: cmmg-rdb
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Pairs Well With
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Build Your Custom Configuration
Add the CMMG Mk4 Lower Receiver (9 ARC Mags) to your build and see how it enhances your platform.