Shop 4,464 Deals on Upper Receivers

CMMG DISSENT Upper Receiver Mk4 300BLK 10.5in 1-7 Twist 5/8x24 Thread Zeroed Linear Compensator Coyote Tan

CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Coyote Tan

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Sniper Grey

CMMG Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Charcoal Green

CMMG Mk4 .300BLK Banshee Upper Group Receiver 12.5in Titanium

CMMG Dissent Mk3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote or Hard Coat Anodized Midnight Bronze

CMMG Dissent Mk3 8.6 Blackout 12.5 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Linear Compensator Cerakote/Hard Coat Anodized Charcoal Green

CMMG Dissent Mk4 5.56mm 14.5in P&W Upper Group 1-7 Twist 1/2 X 28 TPI 23.6in .750in Charcoal Green

CMMG Upper Group Dissent Mk3 6.5 Creedmoor 20in Empire Profile Non-Threaded Tungsten

CMMG Upper Group Dissent Mk3 6.5 Creedmoor 20in Empire Profile Non-Threaded Titanium

CMMG UPPER GROUP DISSENT Mk4 5.56mm 16.1in Empire Profile Non-Threaded Sniper Grey

CMMG Upper Receiver Assembly Mk3/.308WIN Midnight Bronze Midnight Bronze

CMMG Dissent Mk3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote or Hard Coat Anodized Sniper Grey

CMMG Dissent Mk3 .308 Winchester 16.1 inch Upper Receiver 1-10 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote/Hard Coat Anodized Armor Black

CMMG Dissent Mk3 8.6 Blackout 12.5 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Linear Compensator Cerakote/Hard Coat Anodized Midnight Bronze

CMMG Dissent Mk3 .308 Winchester 12.5 inch Upper Receiver 1-10 Twist 5/8 x 24 ZEROED Linear Compensator Cerakote/Hard Coat Anodized Titanium

CMMG Mk47 7.62X39mm Banshee Upper Group Receiver 8in Coyote Tan

CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Sniper Grey

CMMG MkGs .40 S&W Banshee Upper Group Receiver 5in 1-16 Twist 0.578 X 28 TPI 13.7in Armor Black

CMMG Mk3 .308WIN Banshee Upper Group Receiver 12.5in Midnight Bronze

CMMG Mk3 .308WIN Endeavor Upper Group Receiver 24in Sniper Grey

CMMG Banshee Mk3 8.6 Blackout 12.5 inch Upper Receiver Tungsten

CMMG Resolute Mk3 8.6 Blackout 16.1 inch Upper Receiver 1-3 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote Tungsten

CMMG Mk4 5.7X28mm Resolute Upper Group Receiver 16.1in Tungsten