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The Mitchell Defense DOC 11.5in CHF 5.56 NATO Upper Receiver in Black is engineered to deliver optimal performance in a compact tactical configuration. The 7075-T6 billet upper receiver utilizes a thermal-fit barrel seat to improve rigidity and reduce harmonic shift during sustained fire. The cold hammer forged chrome-lined barrel offers superior longevity and thermal stability under heavy use. The ArmorLube Carbon Cutter BCG, paired with a Carpenter 158 HP/MPI bolt, reduces friction and improves long-term reliability. A lightweight M-LOK free-float handguard keeps the system maneuverable while supporting stable accessory mounting. Finished in E-Series Cerakote, this upper is ready for rigorous duty or training environments.![]()
| Manufacturer: | Mitchell Defense |
| Caliber: | 5.56x45mm NATO |
| Overall Length: | 20 in |
| Barrel Length: | 11.5 in |
| Barrel Profile: | Standard |
| Gas System Length: | Carbine Length |
| Barrel Twist Rate: | 1-7 |
| 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 |