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 18" .308 Winchester Billet Rifle Kit - Black
Sale: $589.00MSRP: $719.00Ghost 18" .308 Winchester Billet Rifle Kit - Black Billet DPMS Pattern High Profile Upper 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch A2 Flash Hider 15" M-LOK Free...Sale: $589.00MSRP: $719.00 -
On Sale
Ghost 18" 350 Legend Rifle Kit - Black
Sale: $429.00MSRP: $499.00Ghost 18" 350 Legend Rifle Kit - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:16 Twist 4150 Barrel with Black Nitride Finish Chambered in 350 Legend Carbine Length Gas System .750 Low...Sale: $429.00MSRP: $499.00 -
On Sale
Ghost Firearms 10.5" 300 Blackout with M-Lok 9" Pistol Kit - OD Green
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5".300 Pistol Kit - OD Green Olive Drab Green Cerakote Finish Chambered in 300 AAC Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:8 Twist 4150 Chrome Moly Steel...Sale: $439.00MSRP: $579.00 -
On Sale
Ghost Firearms 16" 7.62X39 WITH 14" M-LOK Rail Rifle Kit - OD GREEN
Sale: $519.00MSRP: $659.00GHOST FIREARMS 16" 7.62x39 RIFLE KIT Finished in Magpul OD Green Cerakote Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Black Nitride Barrel 14" Ghost Firearms Free Float M-LOK Rail Carbine Length Gas System A2 Muzzle Device Mil-Spec 7075-T6 Upper...Sale: $519.00MSRP: $659.00 -
Out of stockOn Sale
ALWAYS ARMED ULTRALIGHT SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK
Sale: $219.00MSRP: $319.00ALWAYS ARMED ULTRALIGHT SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" Pencil Profile 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid...Sale: $219.00MSRP: $319.00 -
On Sale
BLEM ALWAYS ARMED OCT2 SERIES 16" 9MM UPPER RECEIVER - BLACK
Sale: $169.00MSRP: $269.00BLEMISHED ALWAYS ARMED OCT2 SERIES 16" 9MM UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9mm A2 Flash Hider 15"...Sale: $169.00MSRP: $269.00 -
On Sale
BLEM Ghost Firearms Vital 16" 9mm Upper Receiver - Black
Sale: $189.00MSRP: $299.00Blemished Ghost Firearms Vital 16" 9MM Upper - Black Chambered in 9x19 Para A2 Birdcage Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost...Sale: $189.00MSRP: $299.00 -
On Sale
Ghost Firearms 16" 9mm with M-Lok 11" Rifle Kit - Black
Sale: $579.00MSRP: $679.00Ghost Firearms 16" 9MM Rifle Kit - Black Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging Handle A2 Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Chrome Moly Steel Barrel Black Nitride Colt...Sale: $579.00MSRP: $679.00 -
Out of stock
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver with Strike Industries American Flag Dust Cover - OD Green/FDE Combo
$381.95Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Finished in Magpul Olive Drab Green Cerakote Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Pistol Length Gas System Ghost...$381.95 -
On Sale
Ghost Firearms Vital 10.5" 7.62x39 Pistol Kit
Sale: $479.00MSRP: $539.00Ghost Firearms Vital 10.5" Upper Premium AR-15 complete pistol kit Chambered in 7.62X39 A2 Birdcage Flash Hider 10.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride Carbine Length Gas System Ghost Firearms 9" M-Lok Free...Sale: $479.00MSRP: $539.00 -
Ghost Vital 10.5" Upper 5.56 Nato With Stainless Steel Barrel with BCG & Charging Handle
$399.00GHOST FIREARMS VITAL 10.5" 5.56 UPPER RECEIVER - BLACK Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider (Black) 10.5" 1:7 Twist 416R M4 Stainless Steel Barrel Carbine Length Gas System Ghost Firearms 9"...$399.00 -
On Sale
Ghost Vital 16" Upper 5.56 NATO With 11" Rail - Black
Sale: $239.00MSRP: $299.00Ghost Vital 16" 5.56 NATO With 11" Rail - Black Chambered in 5.56 NATO 16" 1:7 Twist 4150 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6 Upper Receiver Mil-Spec...Sale: $239.00MSRP: $299.00 -
On Sale
Grid Defense 16" 9mm Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Upper Receiver - OD Green Finished in Magpul Olive Drab Green Cerakote Milspec 7075-T6 Upper Receiver 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride 14" Grid Defense Octagon M-Lok Rail A2 Muzzle...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 18" .308 Winchester Billet Upper - Black
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - Black Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch Axe Brake Muzzle Device 15"...Sale: $439.00MSRP: $579.00 -
On Sale
Grid Defense 7.5" 5.56 NATO Upper Receiver - Black
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 NATO Upper Receiver Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Hard Coat Black Anodized Finish Pistol Length Gas System A2 Flash Hider Chambered...Sale: $299.00MSRP: $379.00 -
On Sale
ALWAYS ARMED 7.5" 7.62x39 BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $269.00ALWAYS ARMED 7.5" 7.62x39 BX SERIES UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62x39 Pistol Length Gas...Sale: $189.00MSRP: $269.00 -
On Sale
ALWAYS ARMED BX SERIES 16" 5.56 NATO RIFLE KIT - BLACK ANODIZED
Sale: $349.00MSRP: $469.00Always Armed BX Series 16" 5.56 NATO Rifle Kit - Black Anodized Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System...Sale: $349.00MSRP: $469.00 -
On Sale
ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT RIFLE KIT - BLACK
Sale: $349.00MSRP: $469.00ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT RIFLE KIT 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 in .300 Blackout Pistol Length Gas System .750...Sale: $349.00MSRP: $469.00 -
On Sale
GHOST 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - BLACK
Sale: $249.00MSRP: $309.00GHOST 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - BLACK Mil-Spec 7075 Forged Aluminum Upper Receiver 14" Ghost Firearms M-Lok Rail Black Anodized Finish 16" 1:7 Twist 416R Stainless Steel Barrel Stainless Steel A2 Birdcage Muzzle...Sale: $249.00MSRP: $309.00 -
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH OD GREEN 9" RAIL
$349.00GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver - Black Anodized 7.5" 1:7 Twist 4150 Steel Barrel Pistol Length Gas System .750 Low Profile Gas Block Hard Coat Black Anodized...$349.00