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 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 Barrel 1/2x36 Thread Pattern Chambered in 9X19...$349.00 -
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
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE
Sale: $219.00MSRP: $319.00ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE Made in the USA Ridgeway Blue Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:7 Twist Barrel with...Sale: $219.00MSRP: $319.00 -
On 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 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22...Sale: $499.00MSRP: $619.00 -
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 -
On 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 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 Pistol Length Gas System Ghost Firearms 9"...Sale: $329.00MSRP: $378.99 -
On 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 Gas System Ghost Firearms...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 Finish Chambered in 5.56 NATO Carbine Length Gas...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 System .750 Low Profile Gas Block Hard Coat Black Anodized...$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 Carbine Length Gas System Ghost Firearms 9"...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 Barrel Pistol Length Gas System ...$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 Stainless Steel Light HBar Barrel Pistol Length Gas System...$379.00 -
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 -
GHOST IHS 4.5" .22LR UPPER RECEIVER
$249.00 - $269.00GHOST IHS 4.5" .22LR UPPER RECEIVER Chambered in .22LR Hard Coat Black Anodized Finish Made In The USA 4.5" 1:16 Twist 4140 CrMo Barrel 1/2"-28 TPI Medium taper barrel profile 4.25" Ghost IHS (Integral Hand Stop) M-LOK Hand Rail Flash Can...$249.00 - $269.00 -
Ghost Suppressor Ready IHS 5" 5.56 NATO Upper Receiver
$259.00 - $279.00Ghost Suppressor Ready IHS 5.5" 5.56 NATO Upper Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 4.25" Free Float IHS "Intergral Hand Stop" Handguard...$259.00 - $279.00 -
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 Float Hand Guard Finished in Flat Dark Earth...Sale: $259.00MSRP: $329.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Burnt Bronze Burnt Bronze 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" .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