Shop 4,464 Deals on Upper Receivers

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Coyote Tan

CMMG Mk3 .308WIN Endeavor Upper Group Receiver 24in Midnight Bronze

CMMG Mk3 .308WIN Endeavor Upper Group Receiver 20in Tungsten

CMMG Mk3 .308WIN Resolute Upper Group Receiver 16.1in Sniper Grey

CMMG Mk4 .300BLK Banshee Upper Group Receiver 12.5in Coyote Tan

CMMG Mk4 .22LR Banshee Upper Group Receiver 9in Midnight Bronze

CMMG Mk4 .22LR Banshee Upper Group Receiver 9in Coyote Tan

CMMG Upper Group Dissent 9Mm 16.1in Empire Profile Non-Threaded Hard Coat Anodized

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

CMMG Dissent Mk3 6.5mm Creedmoor 20 inch Upper Receiver 1-8 Twist 5/8 x 24 CMMG ZEROED Muzzle Brake Cerakote/Hard Coat Anodized

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 Titanium

CMMG Mk3 6.5 Creedmoor Endeavor Upper Group Receiver 24in Midnight Bronze

CMMG Mk4 6mm ARC Resolute Upper Group Receiver 16.1in Charcoal Green

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Charcoal Green

CMMG Dissent Mk3 .308 Winchester 12.5 inch Upper Receiver 1-10 Twist 5/8 x 24 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 Armor Black

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 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 Sniper Grey

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in 1-7 Twist 1/2 X 28 TPI 18.8in Sniper Grey

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Tungsten

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Midnight Bronze

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

CMMG Mk3 .308WIN Banshee Upper Group Receiver 12.5in Charcoal Green

CMMG Mk3 .308WIN Endeavor Upper Group Receiver 20in Charcoal Green