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
ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BLUE TITANIUM
Sale: $239.00MSRP: $359.00ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BLUE TITANIUM Chambered in .22LR Finished in Blue Titanium Cerakote Made In The USA 4.5" 1:16 Twist 4140 CrMo Barrel Salt bath nitride...Sale: $239.00MSRP: $359.00 -
Out of stockOn Sale
ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BURNT BRONZE
Sale: $239.00MSRP: $359.00ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BURNT BROZE Chambered in .22LR Finished in Burnt Bronze 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 Gen2 Flash Can Pistol Kit - FDE
Sale: $399.00MSRP: $499.00Always Armed 4.5" 9MM Gen2 Flash Can Pistol Kit - FDE Magpul Flat Dark Earth Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging HandleSale: $399.00MSRP: $499.00 -
Out of stockOn Sale
ALWAYS ARMED 7.5" 7.62x39 TR SERIES WITH TRINITY FORCE SIGHTS PISTOL KIT - FDE
Sale: $399.00MSRP: $519.98Always Armed 7.5" 7.62x39 TR Series with Trinity Force Sights Pistol Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 4150 Barrel with...Sale: $399.00MSRP: $519.98 -
Out of stock
Always Armed 7.5" Stainless Steel 9mm Upper Receiver - FDE
$349.00ALWAYS ARMED 7.5" STAINLESS STEEL 9MM UPPER RECEIVER - MAGPUL FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 416R Stainless Steel...$349.00 -
On Sale
ALWAYS ARMED JESTER 16" 5.56 NATO RIFLE KIT - BURNT BRONZE
Sale: $379.00MSRP: $529.00Always Armed Jester 16" 5.56 NATO Rifle Kit - Burnt Bronze 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: $379.00MSRP: $529.00 -
On Sale
ALWAYS ARMED JESTER 16" 5.56 NATO RIFLE KIT - FDE
Sale: $379.00MSRP: $529.00Always Armed Jester 16" 5.56 NATO Rifle Kit - FDE 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...Sale: $379.00MSRP: $529.00 -
Out of stockOn Sale
Ghost 16" .22LR Rifle Kit - Burnt Bronze
Sale: $499.00MSRP: $619.00Ghost 16" .22LR Rifle Kit - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16...Sale: $499.00MSRP: $619.00 -
Out of stockOn Sale
Ghost 16" .22LR Rifle Kit - Tungsten Gray
Sale: $499.00MSRP: $619.00Ghost 16" .22LR Rifle Kit - Tungsten Gray Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16...Sale: $499.00MSRP: $619.00 -
Out of stock
Ghost 18" 5.56 NATO Rifle Length Rifle Kit
$429.00 - $449.00Ghost 18" 5.56 NATO Rifle Length Rifle Kit Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5...$429.00 - $449.00 -
Out of stockOn Sale
Ghost 20" .308 Winchester Billet Rifle Kit - FDE
Sale: $619.00MSRP: $749.00Ghost 20" .308 Winchester Billet Rifle Kit - FDE 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...Sale: $619.00MSRP: $749.00 -
On Sale
GHOST ELITE 10.5" UPPER .300 BLACKOUT WITH AXE BRAKE - ZOMBIE GREEN
Sale: $329.00MSRP: $378.99GHOST ELITE 10.5" UPPER .300 BLACKOUT WITH AXE BRAKE - ZOMBIE GREEN Zombie Green Cerakote Finished Chambered in .300 Blackout Ghost Firearms AXE Brake 10.5" 1:8 Twist 4150 Black Nitride Barrel...Sale: $329.00MSRP: $378.99 -
Out of stockOn Sale
Ghost Firearms Elite 7.5" UPPER 300 BLACKOUT - TACTICAL GRAPE
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5".300 Upper - Tactical Grape Tactical Grape Cerakote Finished Chambered in 300 BLACKOUT (7.62X35) A2 Flash Hider 7.5" 1:8 Twist 4150 M4 Barrel Black Nitride Pistol Length...Sale: $259.00MSRP: $329.00 -
On Sale
GHOST FIREARMS 16" 5.56 NATO UPPER RECEIVER WITH 11" RAIL - FDE
Sale: $259.00MSRP: $339.00GHOST FIREARMS 16" 5.56 NATO UPPER RECEIVER WITH 11" RAIL - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Steel Barrel with Black Nitride...Sale: $259.00MSRP: $339.00 -
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...$349.00 -
On Sale
Ghost Firearms 7.5" 5.56 Stainless Steel Flash Can Upper Receiver - Black
Sale: $289.00MSRP: $349.00GHOST FIREARMS 7.5" 5.56 STAINLESS STEEL FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol...Sale: $289.00MSRP: $349.00 -
On Sale
Ghost Firearms Elite 10.5" 7.62X39 Upper Receiver - FDE
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5" Upper - FDE Flat Dark Earth Cerakote Finished Chambered in 7.62x39 A2 Flash Hider 10.5" 1:10 Twist 4150 M4 Barrel Black Nitride<Sale: $259.00MSRP: $329.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Tungsten Gray
$349.00Ghost Firearms Elite 10.5" .300 Stainless Steel Upper Receiver Tungsten Gray Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar...$349.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 16" Upper .300 AAC Blackout - Tungsten Gray
$379.00Ghost Firearms Elite Stainless Steel 16" 300 Blackout Upper - Tungsten Gray Tungsten Gray Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 16" 1:8 Twist 416R...$379.00 -
On Sale
Ghost Vital 16" Black Upper 5.56 NATO With FDE 11" Rail
Sale: $259.00MSRP: $329.00Ghost Vital 16" Black Upper 5.56 NATO With 11" FDE 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 FlSale: $259.00MSRP: $329.00