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 - Black
Sale: $249.00MSRP: $319.00Ghost Firearms 16" 5.56 NATO Upper Receiver - Black Mil-Spec 7075 Forged Aluminum Upper Receiver 14" Ghost Firearms M-Lok Rail Black Anodized Finish 16" 1:7 Twist 4150 M4 Barrel - Black...Sale: $249.00MSRP: $319.00 -
On Sale
Ghost Vital 10.5" Upper 5.56 Nato - Black
Sale: $239.00MSRP: $299.00Ghost Firearms Vital 10.5" Upper - Black Chambered in 5.56 NATO Mil Spec Upper Receiver with Dust Cover and Forward Assist A2 Birdcage Flash Hider 10.5" 1:7 4150 M4 Barrel - Black Nitride Carbine...Sale: $239.00MSRP: $299.00 -
On Sale
Ghost Vital 7.5" Upper 5.56 Nato
Sale: $239.00MSRP: $299.00Ghost Firearms Vital 7.5" Upper Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System GhSale: $239.00MSRP: $299.00 -
On Sale
Ghost Firearms Elite 16" Upper .300 Blackout - Black
Sale: $249.00MSRP: $319.00Ghost Firearms 16" .300 Blackout Upper Receiver - Black Black Anodized Finish Milspec 7075-T6 Upper Receiver 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System A2...Sale: $249.00MSRP: $319.00 -
Out of stockOn Sale
Ghost Vital 7.5" .300 Blackout Upper Receiver - Black
Sale: $239.00MSRP: $299.00Ghost Vital 7.5" .300 Blackout Upper Receiver - Black Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas SystemSale: $239.00MSRP: $299.00 -
On Sale
Ghost Vital 10.5" Upper .300 Blackout
Sale: $239.00MSRP: $299.00Ghost Vital 10.5".300 Upper Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol&nbSale: $239.00MSRP: $299.00 -
On Sale
Ghost Elite 16" Upper 5.56 Nato - FDE
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" 5.56 Upper - Flat Dark Earth Upper Receiver Flat Dark Earth Cerakote Finish Ghost Elite 16 Upper Chambered in 5.56x45 NATO (Sale: $269.00MSRP: $349.00 -
Out of stockOn Sale
Ghost Vital 7.5" Upper 9MM
Sale: $239.00MSRP: $299.00Ghost Firearms Vital 7.5" Upper Chambered in 9x19 Para A2 Birdcage Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 7" M-LoSale: $239.00MSRP: $299.00 -
On Sale
Ghost Elite 16" Upper .300 Blackout - FDE
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" Upper .300 Blackout - FDE Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol LSale: $269.00MSRP: $349.00 -
On Sale
Ghost Elite 16" Upper 5.56 Nato Blue Titanium
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" 5.56 Upper - Blue Titanium Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas SystemSale: $269.00MSRP: $349.00 -
On Sale
GHOST FIREARMS ELITE 10.5" UPPER RECEIVER - .300 BLACKOUT UPPER - FDE
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5" .300 - Flat Dark Earth Flat Dark Earth Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black NitrSale: $259.00MSRP: $329.00 -
On Sale
Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Black Anodized
Sale: $329.00MSRP: $399.00Grid Defense 10.5" 5.56 Flash Can Upper Receiver Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 or 1:8 Twist 4150 M4 Profile Barrel - Black Nitride...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE
Sale: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered...Sale: $219.00MSRP: $319.00 -
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 BlackSale: $269.00MSRP: $349.00 -
On Sale
Ghost Elite 16" Upper 5.56 Nato Burnt Bronze
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" 5.56 Upper Receiver - Burnt Bronze Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black NitrideSale: $269.00MSRP: $349.00 -
On Sale
Ghost Elite 16" Upper 5.56 Nato - Tungsten Gray
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16"5.56 AR15 Upper Receiver - Tungsten Gray Tungsten Gray Cerakote Finished Chambered in 5.56x45 NATO (5.56/.223) A2 Flash HiderSale: $269.00MSRP: $349.00 -
On Sale
Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00GRID DEFENSE 10.5" .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - FDE Finished in Magpul Flat Dark Earth Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 10.5" 5.56 Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00GRID DEFENSE 10.5" FLASH CAN UPPER - FDE 5.56 UPPER RECEIVER Finished in Magpul Flat Dark Earth Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel -...Sale: $329.00MSRP: $399.00 -
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 FinishSale: $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 HiderSale: $259.00MSRP: $329.00