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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Out of stockOn Sale
Grid Defense Suppressor Ready 16" 5.56 NATO Upper Receiver
Sale: $349.00MSRP: $419.00Grid Defense Suppressor Ready 16" 5.56 NATOÂ Upper Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...Sale: $349.00MSRP: $419.00 -
Out of stock
.22LR CONVERSION KIT - 4.5" BARREL, .22 BOLT CARRIER, MIL-SPEC CHARGING HANDLE, AND 25 ROUND MAGAZINE
$329.00.22LR CONVERSION KIT - 4.5" BARREL, .22 BOLT CARRIER, MIL-SPEC CHARGING HANDLE, AND 25 ROUND MAGAZINE Mil-Spec Charging Handle - AR15 Black Anodized 6061 T6 Aluminum Cycle Loads With Ease Using This...$329.00 -
Out of stockOn Sale
ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - OD GREEN
Sale: $239.00MSRP: $359.00ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - OD GREEN Chambered in .22LR Finished in OD Green Cerakote Made In The USA 4.5" 1:16 Twist 4140 CrMo Barrel Salt bath nitride finished...Sale: $239.00MSRP: $359.00 -
On Sale
ALWAYS ARMED 4.5" 9MM OCTO GEN 2 FLASH CAN UPPER RECEIVER - OD GREEN
Sale: $219.00MSRP: $299.00ALWAYS ARMED 4.5" 9MM OCTO GEN 2 FLASH CAN UPPER RECEIVER Made in the USA Mil Spec AR15 Upper Receiver 4.5" 1:10 Twist Barrel with Black Nitride Finish 4.25" Free Float M-LOK Rail Flash Can Muzzle...Sale: $219.00MSRP: $299.00 -
On Sale
ALWAYS ARMED JESTER 16" .300 BLACKOUT RIFLE KIT - BURNT BRONZE
Sale: $379.00MSRP: $529.00Always Armed Jester 16" .300 Blackout Rifle Kit - Burnt Bronze 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...Sale: $379.00MSRP: $529.00 -
Out of stock
ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLACK
$349.00ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 416R Stainless Steel Barrel...$349.00 -
Out of stockOn Sale
Ghost 18" .308 Winchester Billet Rifle Kit - FDE
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - FDE 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...Sale: $609.00MSRP: $739.00 -
Out of stockOn Sale
Ghost 9" .22LR Pistol Kit - Blue Titanium
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - Blue Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9" 4150 Black Nitride Barrel Lightweight Pencil Profile...Sale: $480.00MSRP: $599.00 -
On Sale
Ghost firearms 16" 7.62X39 With 14" M-LOK Rail Rifle Kit - BURNT BRONZE
Sale: $519.00MSRP: $659.00Ghost Firearms 16" 7.62x39 Rifle Kit Finished in Burnt Bronze Cerakote Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Black Nitride Barrel 14" Ghost Firearms Free Float M-LOK Rail Carbine...Sale: $519.00MSRP: $659.00 -
On Sale
Ghost Firearms 7.5" .300 Blackout with 7" M-Lok Pistol Kit - FDE
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5".300 Pistol Kit - Flat Dark Earth Finished in Flat Dark Earth Cerakote Chambered in .300 Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging HaSale: $439.00MSRP: $579.00 -
On Sale
Ghost Firearms Elite 7.5" Stainless Steel Upper 9MM Magpul OD Green
Sale: $269.00MSRP: $359.00Ghost Firearms Elite 7.5" Upper 9MM - OD Green Chambered in 9x19MM Para A2 Flash Hider 1/2x36 Thread Pattern 7.5" 1:10 Twist 416R Stainless Steel Barrel Ghost Firearms 7" M-Lok Free Float Hand Guard...Sale: $269.00MSRP: $359.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - OD Green
$349.00Ghost Firearms Elite 10.5" .300 Stainless Steel Upper Receiver Magpul Olive Drab Green Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel...$349.00 -
Out of stock
Ghost IHS 4.5" .22LR Pistol Kit
$470.00 - $480.00Ghost IHS 4.5" .22LR Pistol Kit Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 4.5" 4150 Black Nitride Barrel 1:16 Twist Rate 1/2x28 TPI Thread...$470.00 - $480.00 -
Out of stock
Ghost Vital 16" .300 Blackout Rifle Build Kit With Nickel Boron lower parts kit
$529.00Ghost Vital 16" .300 Blackout Rifle Build Kit With Nickel Boron LPK Ghost Firearms Vital 16" Upper Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 300 Blackout Ghost Gun 16" 1:8...$529.00 -
Out of stockOn Sale
Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Pink Champagne
Sale: $329.00MSRP: $399.00Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Pink Champagne Cerakote 5.56 Upper Receiver Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel -...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 10.5" 5.56 Upper Receiver - Periwinkle
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 5.56 Upper Receiver - Periwinkle Finished in Periwinkle Cerakote Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750...Sale: $299.00MSRP: $379.00 -
Out of stock
Grid Defense 10.5" 5.56 Upper Receiver - Tactical Grape
$379.00Grid Defense 10.5" 5.56 Upper Receiver Finished in Purple Cerakote Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas...$379.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - Tactical Grape Tactical Grape Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride...Sale: $329.00MSRP: $399.00 -
Grid Defense 16" 5.56 NATO Lightweight Quad Rail Upper Receiver - FDE
$429.00Grid Defense 16" 5.56 NATO Lightweight Quad Rail Upper Receiver - FDE FDE Cerakote Finish Chambered in 5.56 NATO A2 Flash Hider 16" 1:7 Twist Pencil Profile Barrel Mid Length Gas System .625 Low...$429.00 -
Out of stock
Grid Defense 16" 5.56 Rifle Kit with Magpul Accessories - Black
$717.90Grid Defense 16" 5.56 Upper Receiver - Black Premium AR upper receiver, the new 5.56 AR upper from Grid Defense.With hard coat black anodized. Chambered in 5.56x45 NATO Skeletonized Upper...$717.90