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
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED
Sale: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Blackout Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black...Sale: $219.00MSRP: $319.00 -
Out of stockOn Sale
ALWAYS ARMED 5.5" 9MM FLASH CAN UPPER RECEIVER WITH FDE FLASH CAN AND "WE THE PEOPLE" DUST COVER - OD GREEN
Sale: $209.00MSRP: $319.00ALWAYS ARMED 5.5" 9MM FLASH CAN UPPER RECEIVER - OD GREEN Finished in OD Green Cerakote Milspec 7075-T6 Upper Receiver 5.5" 1:10 9mm Barrel - Black Nitride Chambered in 9mm Always Armed 7"...Sale: $209.00MSRP: $319.00 -
Out of stockOn Sale
ALWAYS ARMED TR SERIES 7.5" 9MM STAINLESS STEEL UPPER RECEIVER - FDE
Sale: $209.00MSRP: $319.00ALWAYS ARMED TR SERIES 7.5" 9MM STAINLESS STEEL UPPER RECEIVER - 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...Sale: $209.00MSRP: $319.00 -
Out of stockOn Sale
Ghost Elite 16" Upper 5.56 Nato With Matching Flash Can - FDE
Sale: $299.00MSRP: $369.00Ghost Firearms Elite 16" 5.56 Upper Receiver With Flash Can - FDE Ghost Elite 16 Upper Chambered in 5.56x45 NATO (5.56/.223) 5.5" Flash Can finished in FDE 16" 1:7 Twist 4150Sale: $299.00MSRP: $369.00 -
On Sale
Grid Defense 16" 7.62x39 Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - ODÂ Finished in Magpul Olive Drab Green Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride A2 Muzzle Device 14" Free Floating M-Lok...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" 5.56 Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver Finished in Magpul Flat Dark Earth Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail...Sale: $299.00MSRP: $379.00 -
On Sale
ALWAYS ARMED 16" 9MM STAINLESS STEEL UPPER RECEIVER - BLACK
Sale: $189.99MSRP: $299.00ALWAYS ARMED 16" 9MM STAINLESS STEEL UPPER RECEIVER - BLACKÂ Made in the USA Chambered in 9x19 Para 16" 416R Stainless Steel Barrel 15" Free Floating MLOK Rail Hard Coat Black Anodized...Sale: $189.99MSRP: $299.00 -
On Sale
Ghost Firearms Elite 16" Upper 9MM - Burnt Bronze
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" Upper 9MM- Burnt Bronze Burnt Bronze Finished Chambered in 9x19 Para 1/2x36 Thread Pattern A2 Flash Hider 16" 1:10 Twist 4150 Light HBar Barrel Black NitrideÂSale: $269.00MSRP: $349.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - Flat Dark Earth FDE Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
ALWAYS ARMED 5.5" 9MM STAINLESS STEEL TR SERIES UPPER RECEIVER WITH 4" RAIL - BLACK
Sale: $189.00MSRP: $269.00ALWAYS ARMED 5.5" 9MM SS TR SERIES UPPER RECEIVER WITH 4" RAIL - BLACK Made in the USA Mil Spec AR15 Upper Receiver 5.5" 1:10 Twist 416R Stainless Steel Barrel 4" Free Float M-LOK Rail Flash...Sale: $189.00MSRP: $269.00 -
On Sale
Ghost Firearms 7.5" 9mm with 7" M-Lok Pistol Kit - Blue Titanium
Sale: $449.00MSRP: $699.00Ghost Firearms 7.5" Pistol Kit - Blue Titanium Blue Titanium Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging HandleÂSale: $449.00MSRP: $699.00 -
On Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 7.5" 5.56 NATO Flash Can Upper Receiver - Blue Titanium Finished in Blue Titanium Cerakote 5.56 Flash Can Upper Made in the USA 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Octagon...Sale: $329.00MSRP: $399.00 -
Ghost Suppressor Ready IHS 5.5" 9mm Upper Receiver
$229.00 - $249.00Ghost Suppressor Ready IHS 5.5" 9MM Upper Chambered in 9x19MM Para 5.5" 1:10 Twist 4150 Straight Profile Barrel Black Nitride 1/2x28 Thread Pattern<$229.00 - $249.00 -
On Sale
GRID DEFENSE 16" 7.62x39 UPPER RECEIVER - BLACK
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - Black Hard Coat Black Anodized Chambered in 7.62x39 14" M-Lok Rail 16" 1:10 4150 Light HBar Barrel - Black Nitride A2 Flash Hider Carbine Length Gas System...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO TR SERIES WITH TRINITY FORCE SIGHTS RIFLE KIT - BLACK ANODIZED
Sale: $349.00MSRP: $519.00Always Armed 16" 5.56 NATO TRX With Trinity Force Sights 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...Sale: $349.00MSRP: $519.00 -
On Sale
Ghost Fireams Elite 16" Upper 9MM - OD Green
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" Upper 9MM - OD Green Chambered in 9x19 Para A2 Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 14" M-Lok Free...Sale: $269.00MSRP: $349.00 -
Out of stock
GRID DEFENSE 16" 9MM COMPLETE UPPER ASSEMBLY
$667.50GRID DEFENSE 16" 9MM COMPLETE UPPER ASSEMBLY Hard Coat Black Anodized Chambered in 9x19 Para 14" M-Lok Rail 16" 1:10 4150 Light HBar Barrel - Black Nitride A2 Flash Hider Mil-Spec 7075-T6...$667.50 -
Out of stockOn Sale
ALWAYS ARMED 6" .300 BLACKOUT UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $269.00ALWAYS ARMED 6" 300 BLACKOUT UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 6" 1:7 Twist 4150 Barrel with Black Nitride...Sale: $189.00MSRP: $269.00 -
On Sale
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tungsten Gray Tungsten Gray Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
ALWAYS ARMED 5.5" 9MM SS FLASH CAN OCTO SERIES UPPER RECEIVER - BURNT BRONZE
Sale: $199.00MSRP: $319.00ALWAYS ARMED 5.5" 9MM SS FLASH CAN UPPER RECEIVER - BURNT BRONZE Made in the USA Mil Spec AR15 Upper Receiver 1/2 x 36 thread pitch 5.5" 1:10 Twist 416R Stainless Steel Barrel 7" Free Float...Sale: $199.00MSRP: $319.00