The Mk4 PDW is? a small, compact upper group equipped with the RKM7 KeyMod free floating hand guard and a nitrided 4140 CrMo steel barrel. The Mk4 PDW upper group is available in 300 BLK, 9mm Luger and 22LR; every upper group is covered by CMMG?s lifetime quality guarantee.
CMMG UPPER GROUP MK9 PDW 9MM
$605.99
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