Hunting & Archery Equipment › cmmg mk4 ar15 upper receiver

CMMG 9mm Banshee Upper Group Receiver 8in Sniper Grey 99B518D-SG

CMMG 9mm Banshee Upper Group Receiver 8in Sniper Grey 99B518D-SG. Not only does this 9mm upper utilize CMMGs RDB technology but shooters also have a number of lower/magazine pairing options. CMMG 9mm uppers work with standard AR15/Mk4 lowers and 9 AR... more

CMMG 9mm Banshee Upper Group Receiver 8in Midnight Bronze 99B518D-MB

CMMG 9mm Banshee Upper Group Receiver 8in Midnight Bronze 99B518D-MB. Not only does this 9mm upper utilize CMMGs RDB technology but shooters also have a number of lower/magazine pairing options. CMMG 9mm uppers work with standard AR15/Mk4 lowers and 9... more

Cmmg Ar-15/M16 22lr Dedicated Barrel - Ar15 9.2" 22lr Barrel W/ Collar

M4-contour barrel converts a standard .223/5.56 upper receiver to a dedicated .22 LR upper when used in conjunction with a CMMG, Ciener, or other Atchison-style .22 rimfire conversion kit (sold separately) and magazine (CMMG or Black Dog). Solves the... more

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 5.56 Nato

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover.... more

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 300 Blk

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover.... more

CMMG 9mm Banshee Upper Group Receiver 8in Coyote Tan 99B518D-CT

CMMG 9mm Banshee Upper Group Receiver 8in Coyote Tan 99B518D-CT. Not only does this 9mm upper utilize CMMGs RDB technology but shooters also have a number of lower/magazine pairing options. CMMG 9mm uppers work with standard AR15/Mk4 lowers and 9 AR... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Midnight Bronze 55BDFF4-MB

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Midnight Bronze 55BDFF4-MB. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine... more

CMMG Mk4 Resolute Upper Receiver Group 6.5mm Grendel 16.1in Armor Black 64BCF88-AB

CMMG Mk4 Resolute Upper Receiver Group 6.5mm Grendel 16.1in Armor Black 64BCF88-AB. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper... more

CMMG Mk4 Resolute Upper Receiver Group .300 AAC Blackout 16.1in Armor Black 30B12BB-AB

CMMG Mk4 Resolute Upper Receiver Group .300 AAC Blackout 16.1in Armor Black 30B12BB-AB. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute... more

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Sniper Grey 55BC7C3-SG

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Sniper Grey 55BC7C3-SG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... more

CMMG Mk4 Resolute Upper Receiver Group 6mm ARC 16.1in Armor Black 60B1091-AB

CMMG Mk4 Resolute Upper Receiver Group 6mm ARC 16.1in Armor Black 60B1091-AB. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper... more

CMMG Mk4 Resolute Upper Receiver Group .350 Legend 16.1in Armor Black 35B5FBC-AB

CMMG Mk4 Resolute Upper Receiver Group .350 Legend 16.1in Armor Black 35B5FBC-AB. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper... more

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Charcoal Green 30B12BB-CG

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Charcoal Green 30B12BB-CG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone... more

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Titanium 35B5FBC-TI

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Titanium 35B5FBC-TI. 30-30 or .243 Win. Designed to work with any standard AR15 lower group this 350 Legend RESOLUTE Mk4 Upper Group is just what you need for your next build. Specifications for... more

CMMG Mk4 Banshee Upper Receiver Group 5.56x45mm NATO 10.5in Armor Black 55B8D53-AB

CMMG Mk4 Banshee Upper Receiver Group 5.56x45mm NATO 10.5in Armor Black 55B8D53-AB. . These AR15 Upper Receivers through the expert product professionals at CMMG are made working with dependable and efficient components in order to provide you with... more

CMMG Mk4 Banshee Upper Receiver Group .300BLK 8in Armor Black 30B81F4-AB

CMMG Mk4 Banshee Upper Receiver Group .300BLK 8in Armor Black 30B81F4-AB. . These AR15 Upper Receivers through the expert product professionals at CMMG are made working with dependable and efficient components in order to provide you with product which... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Sniper Grey 55B8D53-SG

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Sniper Grey 55B8D53-SG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... more

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Tungsten 30B81F4-TNG

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Tungsten 30B81F4-TNG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone looking for... more

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Tungsten 55BC7C3-TNG

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Tungsten 55BC7C3-TNG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere. This... more

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Titanium 30B81F4-TI

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Titanium 30B81F4-TI. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone looking for... more

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Sniper Grey 30B12BB-SG

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Sniper Grey 30B12BB-SG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone... more

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Charcoal Green 55BC7C3-CG

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Charcoal Green 55BC7C3-CG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Tungsten 55B8D53-TNG

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Tungsten 55B8D53-TNG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere. This... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Sniper Grey 55BDFF4-SG

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Sniper Grey 55BDFF4-SG. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like... more

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Sniper Grey 35B5FBC-SG

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Sniper Grey 35B5FBC-SG. 30-30 or .243 Win. Designed to work with any standard AR15 lower group this 350 Legend RESOLUTE Mk4 Upper Group is just what you need for your next build. Specifications... more

CMMG Mk4 Banshee Upper Receiver Group 4.6x30 H&K 8in Armor Black 46B965A-AB

CMMG Mk4 Banshee Upper Receiver Group 4.6x30 H&K 8in Armor Black 46B965A-AB. . These AR15 Upper Receivers through the expert product professionals at CMMG are made working with dependable and efficient components in order to provide you with product... more

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Sniper Grey 30B81F4-SG

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Sniper Grey 30B81F4-SG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone looking... more

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Tungsten 30B12BB-TNG

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Tungsten 30B12BB-TNG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone looking... more

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Coyote Tan 30B12BB-CT

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Coyote Tan 30B12BB-CT. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone... more

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Titanium 30B12BB-TI

CMMG Mk4 .300BLK Resolute Upper Group Receiver 16.1in Titanium 30B12BB-TI. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone looking... more

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Charcoal Green 30B81F4-CG

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Charcoal Green 30B81F4-CG. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone... more

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Midnight Bronze 30B81F4-MB

CMMG Mk4 .300BLK Banshee Upper Group Receiver 8in Midnight Bronze 30B81F4-MB. Whether youre looking to swap your current AR15 upper to quickly switch to 300BLK or looking to top off a new build this 8 BANSHEE upper group is sure to satisfy anyone... more

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Tungsten 35B5FBC-TNG

CMMG Mk4 .350 Legend Resolute Upper Group Receiver 16.1in Tungsten 35B5FBC-TNG. 30-30 or .243 Win. Designed to work with any standard AR15 lower group this 350 Legend RESOLUTE Mk4 Upper Group is just what you need for your next build. Specifications... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Midnight Bronze 55B8D53-MB

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Midnight Bronze 55B8D53-MB. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go anywhere.... more

CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black 55BC7C3-AB

CMMG Mk4 Resolute Upper Receiver Group 5.56x45mm NATO 16.1in Armor Black 55BC7C3-AB. Chambered this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice. Specifications for CMMG Mk4 Resolute Upper... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Titanium 55BDFF4-TI

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Titanium 55BDFF4-TI. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Tungsten 55BDFF4-TNG

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Tungsten 55BDFF4-TNG. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like... more

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green 55BDFF4-CG

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green 55BDFF4-CG. 5 5.56mm BANSHEE upper group with the Mk4/standard AR15 lower group of your choice to create a compact AR pistol or SBR that blends maneuverability with carbine like... more