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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Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver with FDE 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 -
GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH TUNGSTEN GRAY 9" RAIL
$349.00GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER Complete 7.5 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...$349.00 -
Grid Defense 10.5" 5.56 Upper Receiver - Tequila Sunrise
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 5.56 Upper Receiver Finished in Tequila Sunrise Cerakote Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System A2 Flash Hider...Sale: $299.00MSRP: $379.00 -
Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Mid Length Gas System Magpul FDE Complete Upper A2 Flash Hider Mil-Spec...Sale: $329.00MSRP: $399.00 -
Grid Defense 16" 7.62x39 Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Chambered in 7.62x39 16" 4150 1:10 Twist Light HBar Barrel - Black Nitride Carbine Gas System A2 Birdcage Muzzle Device Mil-Spec 7075-T6 Upper Receiver 14"...Sale: $329.00MSRP: $399.00 -
Grid Defense 18" 350 Legend Upper Receiver - FDE
Sale: $349.00MSRP: $419.00Grid Defense 18" 350 Legend Upper Receiver - Flat Dark Earth FDE Cerakote Finish Chambered in 350 Legend A2 Flash Hider 18" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System 5/8x24 Thread Pitch Grid Defense 14" M-Lok Free Float Hand Guard...Sale: $349.00MSRP: $419.00 -
Grid Defense 9" .22LR Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 9" .22LR Flash Can Upper Receiver - FDE 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 Flat Dark Earth Cerakote Fluted...Sale: $329.00MSRP: $399.00 -
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - Blue Titanium
$399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Blue Titanium Cerakote Finish Chambered in 5.56 NATO Grid Defense Mil Spec 7075 T6 Upper Receiver Grid Defense 9" M-Lok Free Float Hand Guard Carbine Length Gas System 10.5" 1:7 Twist 416R...$399.00 -
ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL
Sale: $209.00MSRP: $299.00ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist Upper Finished in Hard Coat Black Anodize 10.5" 1:8 Twist 4150 Barrel with Black Nitride...Sale: $209.00MSRP: $299.00 -
ALWAYS ARMED 16" 9MM TR SERIES UPPER RECEIVER WITH 12" RAIL - FDE
Sale: $219.00MSRP: $309.00ALWAYS ARMED 16" 9MM TR SERIES UPPER RECEIVER WITH 12" RAIL - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 1/2 x 36 Thread Pattern 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9X19...Sale: $219.00MSRP: $309.00 -
ALWAYS ARMED 7.5" .300 BLACKOUT STAINLESS STEEL UPPER RECEIVER WITH SS AXE BRAKE- BLACK
$329.00ALWAYS ARMED 7.5" .300 BLACKOUT STAINLESS STEEL UPPER RECEIVER WITH SS AXE BRAKE- BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 Blackout Pistol...$329.00 -
Ghost Elite 16" Upper .300 Blackout Don't Tread On Me Dust Cover Charging Handle Combo - FDE
Sale: $319.00MSRP: $369.00Ghost Firearms Elite 16" Upper .300 Blackout - FDE Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14" M-Lok Free...Sale: $319.00MSRP: $369.00 -
Ghost Firearms 10.5" 300 Blackout with M-Lok 9" Pistol Kit - OD Green
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5".300 Pistol Kit - OD Green Olive Drab Green Cerakote Finish Chambered in 300 AAC Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:8 Twist 4150 Chrome Moly Steel...Sale: $439.00MSRP: $579.00 -
GHOST FIREARMS 16" 5.56 SS UPPER RECEIVER LIMITED EDITION WITH AMBI CHARGING HANDLE & AXE BRAKE - TITANIUM
$439.00GHOST FIREARMS 16" 5.56 SS UPPER RECEIVER LIMITED EDITION - TITANIUM Finished in Titanium Cerakote Milspec 7075-T6 Upper Receiver 16" 1:7 416R Stainless Steel Barrel Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas System Ghost...$439.00 -
Ghost Firearms 16" 7.62X39 WITH 14" M-LOK Rail Rifle Kit - TUNGSTEN GRAY
Sale: $519.00MSRP: $659.00GHOST FIREARMS 16" 7.62x39 RIFLE KIT Finished in Tungsten Gray 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 -
Ghost Firearms 5.5" 9mm 1:10 HBAR Elite Barreled Upper - 7" M-LOK Rail - Flash Can - Zombie Green
Sale: $249.00MSRP: $329.00Ghost Firearms 5.5" Flash Can Upper with 7" Rail - Zombie Green Barrel - Length 5.5"/Black Nitride Finish Barrel Material - 4150 Steel 9mm Luger Gas System Type Blowback 7" M-LOK Free Float Rail Flash Can Muzzle Device Twist...Sale: $249.00MSRP: $329.00 -
Ghost Vital 10.5" Upper 5.56 Nato With Stainless Steel Barrel with BCG & Charging Handle
$399.00GHOST FIREARMS VITAL 10.5" 5.56 UPPER RECEIVER - BLACK Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider (Black) 10.5" 1:7 Twist 416R M4 Stainless Steel Barrel Carbine Length Gas System Ghost Firearms 9"...$399.00 -
Ghost Vital 16" .300 Blackout With Black Upper and 14" FDE Rail
Sale: $254.00MSRP: $329.00Ghost Vital 16" Black Upper .300 Blackout With 14" FDE Rail - Black Chambered in .300 Blackout 16" 1:8 Twist 4150 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 14" M-Lok Free Float Hand Guard Finished in Flat Dark...Sale: $254.00MSRP: $329.00 -
Ghost Vital 7.5" Upper 5.56 Nato With Stainless Steel Barrel with BCG and Charging Handle
$399.00Ghost Firearms Vital 7.5" Upper Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider (Black) 7.5" 1:7 Twist 416R M4 Stainless Steel Barrel Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand...$399.00 -
Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel - Tungsten Gray
$429.00Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel Chambered in 5.56x45 NATO (5.56/.223) Premium Stainless Steel AXE Break Installed 16" 1:8 Twist 416R M4 Diamond Dimpled Stainless Steel Barrel...$429.00