Go ultra-compact with the Moriarti 5" 5.7x28 AR-15 Complete Upper, designed for a compact 5.7x28 AR configuration while retaining compatibility with a standard AR-15 lower or compatible CMMG Banshee lower.
The 5" 4150 CMV barrel features a nitride finish, 1:9 twist and 1/2x28 muzzle threads. A 4" Moriarti free-float M-LOK handguard keeps the front end compact, while the billet slick-side upper receiver provides a clean, streamlined profile.
This is sold as a complete upper assembly with the 5.7x28 BCG and charging handle included.
| Specification | Details |
|---|---|
| Platform | AR-15 / CMMG-Compatible |
| Caliber | 5.7x28mm |
| Barrel Length | 5" |
| Barrel Material | 4150 CMV |
| Barrel Finish | Nitride |
| Twist Rate | 1:9 |
| Muzzle Thread | 1/2x28 |
| Muzzle Device | Mini Slip-Over Compensator |
| Upper Receiver | Billet Slick Side |
| Dust Cover | Included |
| Handguard | 4" Moriarti Free-Float M-LOK |
| BCG | 5.7x28 – Included |
| Charging Handle | Included |
| Lower Compatibility | Standard AR-15 / Compatible CMMG Banshee |
| Lower Receiver | Not Included |
This 5" 5.7x28 upper is designed to fit a standard AR-15 lower or compatible CMMG Banshee lower. The appropriate 5.7x28 magazine system must be used for the selected lower configuration.
Will this 5" 5.7x28 complete upper fit a standard AR-15 lower?
Yes. This 5" 5.7x28 upper is designed to fit a standard AR-15 lower or compatible CMMG Banshee lower. The correct 5.7x28 magazine system must be used for the selected lower configuration.
Images may not be the exact representation of the product. Component appearance, rail design, finish and other non-material details may vary based on production and availability. Please refer to the product description and specifications for the configuration included.