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CMMG ACTION TUNING KIT MKG/MKGS/MK57

Description

CMMG ACTION TUNING KITMKG/MKGS/MK57

FEATURES:
-Allows you to adjust the action to your preference much like changing buffers or changing gas port settings
on an adjustable gas block
-1 oz weight, 2 oz weight, 3.4 oz weight (standard 9mm), (3) .250"x.625" roll pins

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