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Mfg Item #: 55BC76A
When modularity, affordability, and quality are all important the Mk4 T is the upper of choice. The Mk4 T introduces CMMG's RKM series of KeyMod free-float hand guards and a nitrided 4140 CrMo steel barrel in a medium taper profile.
| Type | Complete Gas Impingement |
|---|---|
| Twist | 1:7" |
| Series | 5.56mm Upper Complete |
| Sights | None, Optic Ready |
| Caliber | 223 Remington/5.56 NATO |
| Handguards | Free-Floating |
| Barrel Length | 16" |
| Barrel Material | 4140 Steel |
| Handguard Finish | Black |
| Barrel Description | Threaded |
| Barrel Length Range | 16.00" to 17.99" |
| Receiver Description | 7075-T6 Aluminum M4 |