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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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 barrel 1/2"-28 TPI Medium taper barrel profile 4.25" TRX...Sale: $239.00MSRP: $359.00 -
ALWAYS ARMED JESTER 16" 9MM RIFLE KIT - FDE
Sale: $349.00MSRP: $509.00Always Armed Jester 16" 9mm Rifle Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9mm A2 Flash Hider 15" Jester Free Float M-LOK Hand...Sale: $349.00MSRP: $509.00 -
Ghost 16" .22LR Rifle Kit - Blue Titanium
Sale: $499.00MSRP: $619.00Ghost 16" .22LR Rifle Kit - Blue Titanium 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 -
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 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22...Sale: $499.00MSRP: $619.00 -
Ghost 16" .308 Winchester Billet Rifle Kit - Blue Titanium
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - Blue Titanium 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 -
Ghost 16" .308 Winchester Billet Rifle Kit - OD Green
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - OD Green 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 Hider 15"...Sale: $599.00MSRP: $729.00 -
Ghost 16" .308 Winchester Billet Rifle Kit - Tungsten Gray
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - Tungsten Gray 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 -
Ghost 18" .308 Winchester Billet Rifle Kit - Blue Titanium
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - Blue Titanium 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 TPI Thread Pitch A2 Flash Hider 15" M-LOK...Sale: $609.00MSRP: $739.00 -
Ghost 18" .308 Winchester Billet Rifle Kit - Burnt Bronze
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - Burnt Bronze 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 TPI Thread Pitch A2 Flash Hider 15" M-LOK Free...Sale: $609.00MSRP: $739.00 -
Ghost 18" .308 Winchester Billet Rifle Kit - OD Green
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - OD Green 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 TPI Thread Pitch A2 Flash Hider 15" M-LOK Free...Sale: $609.00MSRP: $739.00 -
Ghost 18" .308 Winchester Billet Rifle Kit - Tungsten Gray
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - Tungsten Gray 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 TPI Thread Pitch A2 Flash Hider 15" M-LOK...Sale: $609.00MSRP: $739.00 -
Ghost 18" 350 Legend Rifle Kit - Blue Titanium
Sale: $449.00MSRP: $519.00Ghost 18" 350 Legend Rifle Kit - Blue Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:16 Twist 4150 Barrel with Black Nitride Finish Chambered in 350 Legend Carbine Length Gas System .750 Low...Sale: $449.00MSRP: $519.00 -
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 Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered...Sale: $480.00MSRP: $599.00 -
Ghost 9" .22LR Pistol Kit - FDE
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22 Long...Sale: $480.00MSRP: $599.00 -
Ghost 9" .22LR Pistol Kit - OD Green
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22...Sale: $480.00MSRP: $599.00 -
Ghost Elite 16" 5.56 NATO Join or Die Upper Receiver - Black
Sale: $259.00MSRP: $354.00Ghost Elite 16" 5.56 NATO Join or Die Upper Receiver - Black Mil-Spec 7075 Forged Aluminum Upper Receiver 14" Ghost Firearms M-Lok Rail Black Anodized Finish 16" 1:7 Twist 4150 M4 Barrel - Black Nitride A2 Birdcage Muzzle Device Carbine Length Gas...Sale: $259.00MSRP: $354.00 -
Ghost Fireams 16" 300 AAC Blackout with 14" M-Lok Rifle Kit - Zombie Green
Sale: $449.00MSRP: $599.00Ghost Firearms 16".300 AAC Rifle Kit - Zombie Green Zombie Green Cerakote Finish M16 Bolt Carrier Group Chambered in .300 Blackout Mil-spec Charging Handle A2 Flash Hider 16" 1:8 Twist 4150 Chrome Moly Steel Barrel Black Nitride Pistol...Sale: $449.00MSRP: $599.00 -
Ghost Firearms 16" 7.62X39 WITH 14" M-LOK Rail Rifle Kit - TACTICAL GRAPE
Sale: $519.00MSRP: $659.00GHOST FIREARMS 16" 7.62x39 RIFLE KIT 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 Receiver Mil-Spec Lower Parts Kit...Sale: $519.00MSRP: $659.00 -
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH TACTICAL GRAPE 9" RAIL
Sale: $299.00MSRP: $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...Sale: $299.00MSRP: $349.00 -
Ghost Firearms 7.5" 9mm Blast Can Upper Receiver - Black
Sale: $279.00MSRP: $329.00Ghost Firearms 7.5" 9mm Flash Can Upper Receiver - Black Proudly Made in the USA Chambered in 9mm 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:10 Twist 4150 Barrel 1/2x36 Thread Pattern Stubby Blast Can Muzzle Device 7" Ghost...Sale: $279.00MSRP: $329.00