CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Sniper Grey 60B1091-SG
$899.95
CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Sniper Grey 60B1091-SG. Harness the capability of 6mm in this uniquely designed RESOLUTE 16.1 upper.