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  • CMMG 30B129A Mk4 T 300 AAC Blackout/Whisper (7.62x35mm) 16 in 4140 Steel Blk
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CMMG 30B129A Mk4 T 300 AAC Blackout/Whisper (7.62x35mm) 16 in 4140 Steel Blk

Hinterland #: 62724
MPN: 30B129A
UPC: 815835015972
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Hinterland #: 62724
MPN: 30B129A
UPC: 815835015972
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$641.22
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CMMG 30B129A Mk4 T 300 AAC Blackout/Whisper (7.62x35mm) 16 in 4140 Steel Blk

$641.22

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CMMG 30B129A Mk4 T 300 AAC Blackout/Whisper (7.62x35mm) 16 in 4140 Steel Blk

CMMG 30B129A Mk4 T 300 AAC Blackout/Whisper (7.62x35mm) 16 in 4140 Steel Blk

 
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.