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 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $269.00ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...Sale: $189.00MSRP: $269.00 -
On Sale
ALWAYS ARMED 7.5" STAINLESS STEEL 9MM UPPER RECEIVER WITH 5.5" RAIL - BLACK
Sale: $199.00MSRP: $279.00ALWAYS ARMED 7.5" STAINLESS STEEL 9MM UPPER RECEIVER WITH 5.5" RAIL - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver 5.5" MLOK Hand Guard 7.5" 1:10 Twist 416R Stainless Steel Barrel Chambered 9X19 Para A2 Flash Hider Hard Coat Black Anodized...Sale: $199.00MSRP: $279.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - Black
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Hard Coat Black Anodized Finish Mil Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas System A2 Flash Hider...Sale: $299.00MSRP: $379.00 -
On Sale
Ghost 7.5" 5.56 Stainless Steel Upper Receiver - Black
Sale: $229.00MSRP: $319.00Ghost 7.5" 5.56 Stainless Steel Upper Receiver - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas System Ghost Firearms 7" M-Lok Free...Sale: $229.00MSRP: $319.00 -
Out of stock
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 -
On Sale
Grid Defense 7.5" 5.56 NATO Upper Receiver - Black
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 NATO Upper Receiver Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Hard Coat Black Anodized Finish Pistol Length Gas System A2 Flash Hider Chambered...Sale: $299.00MSRP: $379.00 -
On Sale
ALWAYS ARMED 7.5" 7.62x39 BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $269.00ALWAYS ARMED 7.5" 7.62x39 BX SERIES UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62x39 Pistol Length Gas...Sale: $189.00MSRP: $269.00 -
On Sale
GRID DEFENSE 7.5" 9MM STAINLESS STEEL FLASH CAN UPPER RECEIVER - BLACK ANODIZED
Sale: $329.00MSRP: $399.00GRID DEFENSE 7.5" 9MM STAINLESS STEEL FLASH CAN UPPER RECEIVER - BLACK ANODIZED Hard Coat Black Anodized Finish Mil Spec 7075-T6 Upper Receiver 7.5" 1:10 Twist 416R Stainless Steel Barrel 9" Grid Defense Octagon M-Lok Rail Dimpled Flash...Sale: $329.00MSRP: $399.00 -
On Sale
BLEM ALWAYS ARMED 7.5" 5.56 NATO OCT2 SERIES UPPER RECEIVER - BLACK
Sale: $179.00MSRP: $249.00BLEM ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length...Sale: $179.00MSRP: $249.00 -
On Sale
Ghost Firearms 7.5" 5.56 Stainless Steel Flash Can Upper Receiver - Black
Sale: $289.00MSRP: $349.00GHOST FIREARMS 7.5" 5.56 STAINLESS STEEL FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas System .750 Low Profile Gas Block Flash Can...Sale: $289.00MSRP: $349.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO COMPLETE STAINLESS STEEL UPPER RECEIVER WITH BCG/CH/ENHANCED FLASH HIDER - BLACK ANODIZED
Sale: $269.00MSRP: $469.00ALWAYS ARMED 7.5" 5.56 NATO COMPLETE STAINLESS STEEL UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 416R Stainless Steel Barrel Chambered in 5.56 NATO Pistol...Sale: $269.00MSRP: $469.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH ENHANCED MUZZLE DEVICE - BLACK ANODIZED
Sale: $209.00MSRP: $289.00ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH ENHANCED MUZZLE DEVICE - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 416R Stainless Steel Barrel Chambered in 5.56...Sale: $209.00MSRP: $289.00 -
On Sale
ALWAYS ARMED BX SERIES 7.5" 5.56 NATO PISTOL KIT - BLACK ANODIZED
Sale: $339.00MSRP: $449.99ALWAYS ARMED BX SERIES 7.5" 5.56 NATO PISTOL KIT - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length...Sale: $339.00MSRP: $449.99 -
Out of stock
ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLACK
$349.00ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER 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 Length Gas System ...$349.00 -
ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO WTIH ZOMBIE GREEN FLASH CAN UPPER RECEIVER - BLACK
$319.00ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length Gas...$319.00 -
Out of stock
Ghost Vital 7.5" 5.56 Pistol Build Kit With Nickel Boron Lower Parts kit
$499.00Ghost Firearms Vital 7.5" Upper Premium quality AR-15 pistol build kits, the Defense Grid 5.56 pistol kit, with complete lower parts and pistol buffer tube kit. Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7...$499.00 -
Out of stock
Ghost Vital 7.5" .300 Blackout Pistol Build Kit With Nickel Boron lower parts kit
$499.00Ghost Firearms Vital 7.5" .300 Upper A2 Birdcage Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6 Upper Receiver Mil-Spec Hard...$499.00 -
On Sale
GHOST 7.5" 9MM STAINLESS STEEL PISTOL KIT - BLACK
Sale: $369.00MSRP: $599.00GHOST 7.5" 9MM STAINLESS STEEL PISTOL KIT - BLACK Chambered in 9x19 Para A2 Birdcage Flash Hider 7.5" 1:10 Twist 416R Stainless Steel Barrel 1/2x36 Thread Pattern Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6...Sale: $369.00MSRP: $599.00 -
On Sale
ALWAYS ARMED 7.5" STAINLESS STEEL 9MM UPPER RECEIVER - BLACK
Sale: $209.00MSRP: $299.00ALWAYS ARMED 7.5" STAINLESS STEEL 9MM UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver 7" MLOK Hand Guard 7.5" 1:10 Twist 416R Stainless Steel Barrel Chambered 9X19 Para A2 Flash Hider Hard Coat Black Anodized Finish BCG...Sale: $209.00MSRP: $299.00 -
Out of stock
Ghost Firearms Limited Edition 7.5" 5.56 Flash Can Upper with Strike Industries Dust Cover and Timber Creek Forward Assist - Black/FDE
$416.94Ghost Firearms 7.5" Flash Can Upper Receiver Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Pistol Length Gas System Ghost Firearms 9" M-Lok...$416.94