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
Grid Defense 16" 7.62x39 Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" Upper Receiver Finished in Tungsten Gray Cerakote Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride A2 Muzzle Device 14" Free Floating M-Lok Rail Milspec...Sale: $329.00MSRP: $399.00 -
On Sale
GRID DEFENSE 16" 9MM UPPER RECEIVER - BLACK
Sale: $329.00MSRP: $399.00Grid Defense 16" 9MM Upper Receiver - Black Hard Coat Black Anodized Chambered in 9x19 Para Grid Defense 14" M-Lok Rail 16" 1:10 4150 Light HBar Barrel - Black Nitride 1/2x36 Thread...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO TR RIFLE KIT - BLACK
Sale: $329.00MSRP: $469.00ALWAYS ARMED 16" 5.56 NATO TRX RIFLE KIT 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...Sale: $329.00MSRP: $469.00 -
On Sale
ALWAYS ARMED 16" 9MM TR SERIES UPPER RECEIVER WITH 12" RAIL - BLACK
Sale: $179.00MSRP: $269.00ALWAYS ARMED 16" 9MM TR SERIES UPPER RECEIVER WITH 12" RAIL - 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...Sale: $179.00MSRP: $269.00 -
Out of stockOn Sale
Ghost 16" .308 Winchester Billet Rifle Kit - FDE
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - FDE Billet DPMS Pattern High Profile Upper 16" 4150 Chrome Moly HBAR Contour Barrel Mid Length Gas System Chambered in .308 Winchester 1:10 Twist...Sale: $599.00MSRP: $729.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - Tungsten Gray Tungsten Gray 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 -
On Sale
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Finished in Magpul Flat Dark Earth Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense...Sale: $299.00MSRP: $379.00 -
Out of stockOn Sale
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL
Sale: $229.00MSRP: $309.00ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 416R Stainless Steel...Sale: $229.00MSRP: $309.00 -
On Sale
ALWAYS ARMED 7.5" 9MM UPPER RECEIVER - SIG PINK
Sale: $189.00MSRP: $299.00Always Armed 7.5"9MM Upper Receiver - Sig Pink 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...Sale: $189.00MSRP: $299.00 -
On Sale
ALWAYS ARMED JESTER 16" 5.56 NATO RIFLE KIT - BLACK
Sale: $329.00MSRP: $469.00Always Armed Jester 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...Sale: $329.00MSRP: $469.00 -
On Sale
ALWAYS ARMED TR SERIES 16" 9MM STAINLESS STEEL UPPER RECEIVER - BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED 16" 9MM UPPER RECEIVER Made in the USA 16" 416R Stainless Steel Barrel Chambered in 9X19 Para 15" Free Floating MLOK Rail Black Anodized Finish A2 Muzzle Device - Black Nitride Finish...Sale: $199.00MSRP: $299.00 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - FDE
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Finished in Magpul Flat Dark Earth Cerakote Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5...Sale: $449.00MSRP: $599.00 -
Out of stockOn Sale
GRID DEFENSE 10.5" 9MM UPPER RECEIVER - FDE
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 9mm Upper Receiver - FDE Finished in Flat Dark Earth Cerakote Mil Spec 7075-T6 Upper Receiver 10.5" 9MM Barrel Chrome Moly Vanadium 1:10 Twist Rate Straight Profile...Sale: $299.00MSRP: $379.00 -
On Sale
ALWAYS ARMED Jester 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL- BLACK
Sale: $179.00MSRP: $269.00ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER Made in the USASale: $179.00MSRP: $269.00 -
On Sale
Ghost Firearms Elite 10.5" 7.62X39 Upper receiver - OD GREEN
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5" Upper - OD Green OD Green Cerakote Finished 7.62x39 Upper Receiver Chambered in 7.62x39 A2 Muzzle DeviceSale: $259.00MSRP: $329.00 -
Out of stockOn Sale
7.5" 9MM WITH M-LOK 7" PISTOL KIT - TACTICAL GRAPE
Sale: $389.00MSRP: $669.00Ghost Firearms 7.5" Pistol Kit - Tactical Grape Tactical Grape Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging Handle A2 Flash Hider 1/2x36 Thread...Sale: $389.00MSRP: $669.00 -
On Sale
Ghost Firearms 7.5" 300 Blackout with 7" M-Lok Pistol - Kit Blue Titanium
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5".300 Pistol Kit - Blue Titanium Premium AR-15 pistol build kit, the new 300 blackout pistol kit from Ghost Firearms. Features M16 BCG and mil-spec charging handle. Blue Titanium...Sale: $439.00MSRP: $579.00 -
On Sale
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE
Sale: $189.00MSRP: $299.00Always Armed 10.5" 300 Blackout Upper Receiver - Ridgeway Blue Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride...Sale: $189.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 5.5" 9MM TR SERIES FLASH CAN UPPER RECEIVER - FDE
Sale: $219.00MSRP: $299.00ALWAYS ARMED 5.5" 9MM TR SERIES FLASH CAN UPPER RECEIVER - FDE Made in the USA Mil Spec AR15 Upper Receiver 1/2 x 36 thread pitch 5.5" 1:10 Twist 4150 Steel Barrel 7" TR Series Free Float M-LOK...Sale: $219.00MSRP: $299.00