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" 5.56 Upper Receiver With 12" Rail - Pink Champagne
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Pink Champagne Pink Champagne Cerakote Finish Chambered in 5.56 1:7 Twist Rate 1/2x28 TPI Thread Pitch 12" Free Float M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle
Sale: $259.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle Finished in Periwinkle Cerakote AR15 Skeletonized Upper 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...Sale: $259.00MSRP: $379.00 -
Aero Precision 16" 5.56 NATO Upper Receiver - FDE
$534.99Aero Precision 16" 5.56 NATO Upper Receiver - FDE M4E1 Threaded Assembled Upper Receiver ATLAS S-ONE M-LOK Handguard of choice 16" 5.56 CMV Barrel Low Profile Gas Block and Mid-Length Gas Tube Product comes assembled This complete upper does not...$534.99 -
Out of stockOn Sale
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 -
On Sale
Ghost 9" .22LR Pistol Kit - Burnt Bronze
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - Burnt Bronze 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...Sale: $480.00MSRP: $599.00 -
On Sale
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - FDE Finished in Flat Dark Earth Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Stainless A2 Muzzle Device Pistol...Sale: $299.00MSRP: $379.00 -
On Sale
Andro Corp 5" .300 Blackout Upper Receiver - Black
Sale: $350.00MSRP: $415.00Andro Corp 5" .300 Blackout Upper Receiver - Black 4150 CMV Melonite 1:7 Twist M4 Feed Ramps Micro Length Gas System .750 Low Profile Gas Block QPQ Corrosion Resistant Finish A2 Flash Hider 5/8x24 Thread Pitch M-LOK Hand Guard 7075 T6...Sale: $350.00MSRP: $415.00 -
On Sale
GHOST STAINLESS STEEL 16" .223 WYLDE RIFLE KIT - BLACK
Sale: $429.00MSRP: $499.00GHOST STAINLESS STEEL 16" .223 Wylde RIFLE KIT - BLACK Hard Coat Black Anodized Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 14" Free Float M-LOK Handrail Stainless A2 Muzzle Device Mil-Spec...Sale: $429.00MSRP: $499.00 -
On Sale
GHOST STAINLESS STEEL 16" .223 WYLDE RIFLE KIT -BLUE TITANIUM
Sale: $449.00MSRP: $599.00GHOST STAINLESS STEEL 16" .223 Wylde RIFLE KIT - BLUE TITANIUM Finished in Blue Titanium Cerakote Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 14" Free Float M-LOK Handrail Stainless A2 Muzzle...Sale: $449.00MSRP: $599.00 -
On Sale
Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - Burnt Bronze
Sale: $339.00MSRP: $409.00Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch Black A2 Muzzle Device Carbine Length Gas...Sale: $339.00MSRP: $409.00 -
Andro Corp 5" 5.56 Upper Receiver - Black
$415.00Andro Corp 5" 5.56 Upper Receiver - Black 4150 CMV Melonite 1:5 Twist Rate M4 Feed Ramps Micro Length Gas System .750 Low Profile Gas Block QPQ Corrosion Resistant Finish A2 Flash Hider 1/2x28 Threaded Muzzle 5" M-LOK Hand Guard 7075-T6...$415.00 -
On Sale
ALWAYS ARMED 7.5" 9MM PISTOL KIT - SIG PINK
Sale: $359.00MSRP: $579.00Always Armed 7.5" 9mm Rifle Kit - Sig Pink Made in the USA Mil-Spec Lower Parts Kit 7.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9X19 Para A2 Flash Hider 7" Free Float M-LOK Hand Guard Bolt Carrier Group Charging Handle ...Sale: $359.00MSRP: $579.00 -
On Sale
Grid Defense 6" .300 Blackout Flash Can Upper Receiver - Black
Sale: $329.00MSRP: $399.00Grid Defense 6" .300 Blackout Pistol Upper Receiver - Black Chambered in .300 Blackout 6" 1:7 Twist 4150 Light HBar Barrel - Black Nitride 7075-T6 Milspec Upper Receiver Pistol Length Gas System .750 Low Profile Gas Block Dimpled Flash...Sale: $329.00MSRP: $399.00 -
On Sale
GHOST STAINLESS STEEL 16" .223 WYLDE RIFLE KIT - FDE
Sale: $449.00MSRP: $599.00GHOST STAINLESS STEEL 16" .223 Wylde RIFLE KIT - FDE Flat Dark Earth Cerakote Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 14" Free Float M-LOK Handrail A2 Muzzle Device Mil-Spec 7075-T6 Upper...Sale: $449.00MSRP: $599.00 -
On Sale
GHOST STAINLESS STEEL 10.5" .223 WYLDE PISTOL KIT - BLUE TITANIUM
Sale: $399.99MSRP: $579.00GHOST STAINLESS STEEL 10.5" .223 WYLDE RIFLE KIT - BLUE TITANIUM Finished in Blue Titanium Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch 9" Free Float M-LOK Handrail A2 Muzzle...Sale: $399.99MSRP: $579.00 -
Out of stockOn Sale
Grid Defense 20" 6.5 Grendel Upper Receiver - FDE
Sale: $329.00MSRP: $419.00Grid Defense 20" 6.5 Grendel Upper Receiver - FDE Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free Float Handguard Finished in Magpul Flat Dark Earth...Sale: $329.00MSRP: $419.00 -
On Sale
Ghost Vital 7.5" 5.56 Stainless Steel Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 7.5" 5.56 Upper Stainless Steel - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider - Black 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas System Ghost Firearms 7" M-Lok Free...Sale: $419.00MSRP: $479.00 -
On Sale
ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - FDE
Sale: $239.00MSRP: $359.00ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - FDE Chambered in .22LR Finished in FDE 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 Series...Sale: $239.00MSRP: $359.00