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
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 -
Out of stockOn Sale
ALWAYS ARMED OCTO SEREIS 7.5" 300 BLACKOUT UPPER RECEIVER WITH AXE BRAKE - TITANIUM
Sale: $249.00MSRP: $329.00ALWAYS ARMED OCTO SEREIS 7.5" 300 BLACKOUT UPPER RECEIVER WITH AXE BRAKE - TITANIUM Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout...Sale: $249.00MSRP: $329.00 -
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 7.5" 5.56 NATO OCT2 SERIES UPPER RECEIVER - BLACK
Sale: $179.00MSRP: $249.00BLEM ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length...Sale: $179.00MSRP: $249.00 -
On Sale
Ghost 16" .308 Winchester Billet Rifle Kit - Burnt Bronze
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - Burnt Bronze Billet DPMS Pattern High Profile Upper 16" 4150 Chrome Moly HBAR Contour Barrel Mid Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch A2 Flash...Sale: $599.00MSRP: $729.00 -
Out of stockOn Sale
Ghost 20" .308 Winchester Billet Rifle Kit - Tungsten Gray
Sale: $619.00MSRP: $749.00Ghost 20" .308 Winchester Billet Rifle Kit - Tungsten Gray Billet DPMS Pattern High Profile Upper 20" 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...Sale: $619.00MSRP: $749.00 -
On Sale
GHOST FIREARMS 16" 5.56 NATO MID LENGTH UPPER RECEIVER - FDE
Sale: $269.00MSRP: $349.00GHOST FIREARMS 16" 5.56 NATO MID LENGTH UPPER RECEIVER - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Steel Mid Length Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid...Sale: $269.00MSRP: $349.00 -
On Sale
Ghost Firearms 16" 7.62X39 With14" M-LOK Rail Rifle Kit - BLUE TITANIUM
Sale: $519.00MSRP: $659.00GHOST FIREARMS 16" 7.62x39 RIFLE KIT Finished in Blue Titanium 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 -
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 -
On Sale
Ghost Firearms 7.5" 300 Blackout with 7" M-Lok Pistol Kit Burnt Bronze
Sale: $439.00MSRP: $579.00GHOST FIREARMS 7.5" 300 Blackout Upper M-Lok Pistol Kit- BURNT BRONZE Chambered in 300 AAC Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 7.5" 1:8 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $439.00MSRP: $579.00 -
Out of stock
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER LIMITED EDITION - TITANIUM
$499.00GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER LIMITED EDITION - TITANIUM Finished in Titanium Cerakote Milspec 7075-T6 Upper Receiver 7.5" 1:7 416R Stainless Steel Barrel Chambered in 5.56x45 NATO .750 Low Profile Gas Block Pistol Length Gas System...$499.00 -
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 -
On Sale
Ghost Firearms Vital 16" 9mm Stainless Steel Upper Receiver - Black Anodized
Sale: $239.00MSRP: $299.00Ghost Firearms Vital 16" 9MM Stainless Steel Upper - Black Chambered in 9x19 Para A2 Birdcage Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 416R Stainless Steel Barrel Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost...Sale: $239.00MSRP: $299.00 -
Out of stock
Grid Defense 10.5" 5.56 Upper Receiver with Stainless Steel Barrel - Tactical Grape
$409.00Grid 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 416R Stainless Steel M4 Barrel 9" MLOK Hand Guard .750 Low Profile Gas Block Carbine Length Gas System A2 Flash...$409.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tungsten Gray Tungsten Gray Cerakote Finish Chambered in .300 Blackout 14" M-Lok Quad Rail 16" 1:8 4150 Barrel - Black Nitride Pistol Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" 9mm Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Milspec 7075-T6 Upper Receiver 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride 1/2x36 Thread Pattern 14" Grid Defense Octagon M-Lok Rail A2 Muzzle Device...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 -
Out of stockOn Sale
Grid Defense 9" .22LR Flash Can Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 9" .22LR Flash Can Upper Receiver - Blue Titanium Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 9" Grid Defense Octagon M-Lok Rail Blue Titanium Cerakote...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense 9" .22LR Upper Receiver - OD Green
Sale: $299.00MSRP: $379.00Grid Defense 9" .22LR Upper Receiver - OD Green Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in OD Green...Sale: $299.00MSRP: $379.00