AR-15 | AR-10
Grid Defense is the first stop for your next AR15 build with our wide variety of barreled upper receivers to choose from. We offer a multitude of options from barrel length, color, handguard designs, and caliber. Whether you are a beginner or experienced gunsmith our uppers are designed to be easy to expand while staying cost friendly. Check out our Upper and Lower parts for everything else you need to complete your build.
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On Sale
Ghost Elite 16" Upper 5.56 Nato OD Green
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" 5.56 Upper - OD Green Made in the USA Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 14" M-Lok Free...Sale: $269.00MSRP: $349.00 -
On Sale
Grid Defense 16" 5.56 Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 AR Upper Receiver - OD Green Upper Receiver Magpul Olive Drab Green Cerakote Finish AR15 Complete Upper Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Elite 10.5" Upper 5.56 Nato - OD Green
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5" 5.56 Upper - OD Green OD Green Cerakote Finished Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 10.5" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms...Sale: $259.00MSRP: $329.00 -
On Sale
Ghost Firearms Elite 16" Upper .300 AAC Blackout - OD Green
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" .300 AAC Upper - OD Green 300 BLACKOUT UPPER Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14"...Sale: $269.00MSRP: $349.00 -
On Sale
Grid Defense 10.5" 5.56 Flash Can Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00GRID DEFENSE 10.5" 5.56 FLASH CAN UPPER RECEIVER - OD GREEN Finished in OD Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO Carbine Length Gas System .750 Low...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Fireams Elite 10.5" Upper .300 Blackout - OD Green
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5".300 - OD Green OD Green Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 9"...Sale: $259.00MSRP: $329.00 -
On Sale
Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00GRID DEFENSE 10.5" UPPER - .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - OD GREEN Finished in Magpul Olive Drab Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Firearms Elite 7.5" Upper 9MM Magpul OD Green
Sale: $239.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper 9MM - OD Green Chambered in 9x19MM Para A2 Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6...Sale: $239.00MSRP: $329.00 -
On Sale
Ghost Firearms 16" 5.56mm with 14" M-Lok Rifle Kit - OD Green
Sale: $449.00MSRP: $599.00Ghost Firearms 16" Rifle Kit - OD Green OD Green Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $449.00MSRP: $599.00 -
On Sale
Ghost Elite 7.5" Upper 5.56 Nato OD Green
Sale: $259.00MSRP: $329.00Ghost Firearms 7.5" 5.56 Upper - OD Green OD Green Cerakote Finished Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7"...Sale: $259.00MSRP: $329.00 -
On Sale
Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense OD Green .300 Blackout Flash Can Upper Receiver Made in the USA 9" Free Floating M-Lok Rail Finished in Magpul OD Green Cerakote Dimpled Flash Can - 5/8x24 Thread Pattern .750 Low Profile Gas Block Pistol Length Gas System 7075-T6...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Firearms Elite 7.5" Upper .300 Blackout - OD Green
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5".300 Upper - OD Green OD Green Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7"...Sale: $259.00MSRP: $329.00 -
On Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense OD Green 7.5" 5.56 Flash Can Upper Finished in Magpul Olive Drab Green Cerakote 7075-T6 Mil Spec 5.56 Upper Receiver Chambered in 5.56x45 NATO 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Grid Defense Octagon M Lok Rail Dimpled...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Magpul OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Magpul OD Green Magpul OD Green Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 16" Upper...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - OD Green OD Green Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System Grid Defense 14" M-Lok Free Float Hand...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" 7.62x39 Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - OD Finished in Magpul Olive Drab Green Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride A2 Muzzle Device 14" Free Floating M-Lok Rail Milspec 7075-T6 Upper Receiver Carbine Gas...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Fireams Elite 16" Upper 9MM - OD Green
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" Upper 9MM - OD Green Chambered in 9x19 Para A2 Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 14" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $269.00MSRP: $349.00 -
On Sale
ALWAYS ARMED 5.5" 9MM FLASH CAN UPPER RECEIVER WITH FDE FLASH CAN AND "WE THE PEOPLE" DUST COVER - OD GREEN
Sale: $209.00MSRP: $319.00ALWAYS ARMED 5.5" 9MM FLASH CAN UPPER RECEIVER - OD GREEN Finished in OD Green Cerakote Milspec 7075-T6 Upper Receiver 5.5" 1:10 9mm Barrel - Black Nitride Chambered in 9mm Always Armed 7" M-Lok Rail Magpul Flat Dark Earth Flash Can Laser...Sale: $209.00MSRP: $319.00 -
On Sale
Grid Defense 10.5" .300 Blackout Upper Receiver - OD Green
Sale: $299.00MSRP: $379.00Grid Defense 10.5" .300 Blackout Upper Receiver - OD Green Finished in Magpul Olive Drab Green Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 4150 Steel Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) A2 Muzzle...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - OD Green
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Finished in Magpul OD Green Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas System A2 Flash Hider...Sale: $299.00MSRP: $379.00