MISB CMMG AR Upper 5.7mm 12″ – $1950
![](https://www.swsrifles.com/wp-content/uploads/2023/04/57-scaled.jpg)
- Caliber: 5.7×28
- Baffling: 6″
- Effective Rifling: 6″
- OAL Barrel: 12″
- Handguard: Aero Precision M-Lok
- Handguard Length: 9.3″
- Bolt Carrier Group: CMMG Radial Delay Blow Back System
- Utilizes standard AR-15 lower receivers and CMMG magazines
E-mail sales@swsrifles.com, call (832) 759-9634, or use our contact form for orders and inquiries.
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