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Made in USA
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Product Info for Mitchell Defense The DOC AR-15 5.56mm NATO 10.3in Upper Receiver
The Mitchell Defense DOC 10.3in CHF 5.56 NATO Upper Receiver is engineered for duty-grade reliability with a 7075-T6 billet upper and thermal-fit barrel seat for enhanced rigidity and accuracy. The cold hammer forged chrome-lined barrel withstands high firing schedules with exceptional heat tolerance and bore longevity. The ArmorLube Carbon Cutter BCG, built around a Carpenter 158 HP/MPI bolt, provides smooth cycling and high resistance to wear. A lightweight M-LOK free-float handguard offers stability and accessory adaptability, while the E-Series Cerakote finish protects against harsh environmental conditions. This upper is designed for users needing a robust, compact 5.56 platform optimized for professional use.![]()
Specifications for Mitchell Defense The DOC AR-15 5.56mm NATO 10.3in Upper Receiver:
| Manufacturer: | Mitchell Defense |
| Caliber: | 5.56x45mm NATO |
| Overall Length: | 19 in |
| Barrel Length: | 10.3 in |
| Barrel Profile: | Standard |
| Gas System Length: | Carbine Length |
| Barrel Twist Rate: | 1-7 |
| Firearms Threads Per Inch: | Non Threaded |
| Muzzle Device: | A2 Flash Hider |
| Finish: | Nitride |
| Gun Model: | AR-15 |
| Fabric/Material: | 4150 CrMoV |
| Gun Make: | AR Platform |
| Bolt Carrier Group Included: | MIL-SPEC |
| Charging Handle Included: | MIL-SPEC |
| Country of Origin: | USA |
Features of Mitchell Defense The DOC AR-15 5.56mm NATO 10.3in Upper Receiver
- Thermal-fit billet upper receiver enhances accuracy and structural strength
- ArmorLube Carbon Cutter BCG with C158 HP/MPI bolt improves cycling reliability
- Lightweight M-LOK handguard for rigid accessory mounting
- Ideal compact 5.56 platform for duty, training, or defensive roles
- E-Series Cerakote for long-term environmental protection
Package Contents:
- Mitchell Defense The DOC AR-15 5.56mm NATO 10.3in Upper Receiver
Mitchell Defense The DOC AR-15 5.56mm NATO 10.3in Upper Receiver Orderable Models
List of Orderable Models
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Flat Dark Earth Finish, M-LOK Free-Float Handguard, 422211 , MPN: 422211 , UPC: 850073456286 , Code: 6PS-UFH-VGB19-422211
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Jungle Green Finish, Quad Rail Handguard, 422312 , MPN: 422312 , UPC: 850073456316 , Code: 6PS-UFH-VGB19-422312
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Flat Dark Earth Finish, Quad Rail Handguard, 422212 , MPN: 422212 , UPC: 850073456293 , Code: 6PS-UFH-VGB19-422212
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Black Finish, M-LOK Free-Float Handguard, 422111 , MPN: 422111 , UPC: 850073456262 , Code: 6PS-UFH-VGB19-422111
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Jungle Green Finish, M-LOK Free-Float Handguard, 422311 , MPN: 422311 , UPC: 850073456309 , Code: 6PS-UFH-VGB19-422311
- Mitchell Defense DOC 10.3in 5.56 NATO Upper Receiver, Cold Hammer Forged Chrome-Lined Barrel, Black Finish, Quad Rail Handguard, 422112 , MPN: 422112 , UPC: 850073456279 , Code: 6PS-UFH-VGB19-422112