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
GHOST FIREARMS 10.5" 5.56 BURNT BRONZE UPPER RECEIVER WITH 9" FDE M-LOK RAIL
Sale: $269.00MSRP: $329.00GHOST FIREARMS 10.5" 5.56 NATO UPPER RECEIVER Chambered in 5.56 NATO 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver - Burnt Bronze A2 Birdcage Flash Hider 10.5" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System Ghost Firearms FDE 9"...Sale: $269.00MSRP: $329.00 -
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 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 -
On Sale
GRID DEFENSE 10.5" 9MM UPPER RECEIVER - BURNT BRONZE
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 9mm Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Mil Spec 7075-T6 Upper Receiver 10.5" 9MM Barrel Chrome Moly Vanadium 1:10 Twist Rate Straight Profile Barrel QPQ Corrosion Resistant Coating 9" Grid Defense...Sale: $299.00MSRP: $379.00 -
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
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" 9mm Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Upper Receiver - Blue Titanium Finished in Blue Titanium 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 -
On Sale
ALWAYS ARMED 5.5" 9MM OCTO SERIES FLASH CAN PISTOL KIT - BURNT BRONZE
Sale: $424.00MSRP: $599.00ALWAYS ARMED 5.5" 9MM OCTO SERIES FLASH CAN PISTOL KIT - BURNT BRONZE Made in the USA Mil-Spec Lower Parts Kit 1/2 x 36 Thread Pitch 5.5" 1:10 Twist 416R Stainless Steel Barrel Chambered in 9X19 Para Flash Can Muzzle Device 7.25" Free Float...Sale: $424.00MSRP: $599.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Blue Titanium
$349.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver Blue Titanium 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 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Blue Titanium Blue Titanium 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 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 16" 8.6 Blackout Billet Upper - Burnt Bronze
Sale: $429.00MSRP: $569.00Grid Defense 16" 8.6 Blackout Billet Upper - Burnt Bronze Billet DPMS High Profile Pattern upper 16" 4150 chrome moly barrel Carbine length gas system Chambered in 8.6 Blackout 1:10 Twist Rate 5/8x24 TPI Thread Pitch .750 Gas Block A2 Flash...Sale: $429.00MSRP: $569.00 -
On Sale
Grid Defense 16" 9mm Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Milspec 7075-T6 Upper Receiver 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride 14" Grid Defense Octagon M-Lok Rail A2 Muzzle Device...Sale: $329.00MSRP: $399.00 -
On Sale
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 -
On Sale
Ghost 18" .308 Winchester Billet Upper - Blue Titanium
Sale: $409.00MSRP: $539.00Ghost 18" .308 Winchester Billet Upper - Blue Titanium Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern A2 Flash Hider 15"...Sale: $409.00MSRP: $539.00 -
On Sale
Ghost firearms 16" 7.62X39 With 14" M-LOK Rail Rifle Kit - BURNT BRONZE
Sale: $519.00MSRP: $659.00Ghost Firearms 16" 7.62x39 Rifle Kit Finished in Burnt Bronze 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
Grid Defense 16" 9mm Stainless Steel Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Stainless Steel Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Milspec 7075-T6 Upper Receiver 16" 416R Stainless Steel Barrel with 1:10 Twist Rate 1/2x36 Thread Pattern 14" Grid Defense Octagon M-Lok Rail A2 Muzzle...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" 5.56 Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver Finished in Blue Titanium Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas System A2 Flash Hider Chambered in...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense GX2 7.5" 5.56 Flash Can Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense GX2 7.5" 5.56 NATO Flash Can Upper Mil-Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled Flash Can Pistol Length Gas System Made in the...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense GX2 7.5" 5.56 Flash Can Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense GX2 7.5" 5.56 NATO Flash Can Upper Mil-Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled Flash Can Pistol Length Gas System Made in the...Sale: $329.00MSRP: $399.00