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.
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Type : Complete Gas Impingement
Caliber : 223 Remington/5.56 NATO
Sights : None, Optic Ready
Barrel Length : 16"
Barrel Material : 4140 Steel
Twist : 1:7"
Barrel Description : Threaded
Receiver Description : 7075-T6 Aluminum M4
Receiver Finish : Black
Handguards : Free-Floating
Handguard Finish : Black
Barrel Length Range : 16.00" to 17.99"
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