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CMMG Mk4 T 300 Blackout 30B129A

Product Code : 815835015972


Mfg Item #: 30B129A

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. This upper sports an 11" RKM hand guard and a nitrided 4140 CrMo steel barrel in a medium taper profile.

TypeComplete Gas Impingement
Series300 Blackout
SightsNone, Optic Ready
Caliber300 bo
HandguardsQuad Rail Keymod
Barrel FinishBlack
Barrel Length16"
Barrel Material4140 Steel
Handguard FinishBlack
Barrel DescriptionMedium Taper
Barrel Length Range16.00" to 16.99"
Receiver Description7075-T6 Aluminum M4

Determined at checkout.