Whether it's the classic style or forward assist functionality that piques your interest, the Mk4 AR15 upper receiver assembly has been a staple in the CMMG lineup. Available in different Cerakote finishes, this mil-spec workhorse has been proven over the years and makes a great base to build your next AR15 upper group.
Mk4/AR15 Upper Receiver Assembly w/ Forward Assist
CMMG
Gun Stuff/Rifle Parts/Uppers / Upper Parts
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CMMG
Mk4/AR15 Upper Receiver Assembly w/ Forward Assist
$161.68
CMMG-MK4UPPERRECASSMFORWARDASSIST
810097506435
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