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
7.5" 9MM WITH M-LOK 7" PISTOL KIT - TACTICAL GRAPE
Sale: $389.00MSRP: $669.00Ghost Firearms 7.5" Pistol Kit - Tactical Grape Tactical Grape Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging Handle A2 Flash Hider 1/2x36 Thread Pattern 7.5" 1:10 Twist 4150...Sale: $389.00MSRP: $669.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO TR SERIES WITH TRINITY FORCE SIGHTS PISTOL KIT - BLACK ANODIZED
Sale: $349.00MSRP: $489.00Always Armed 7.5" 5.56 NATO TR Series with Trinity Force Sights 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...Sale: $349.00MSRP: $489.00 -
On Sale
ALWAYS ARMED 5.5" 9MM TR SERIES FLASH CAN UPPER RECEIVER - FDE
Sale: $219.00MSRP: $299.00ALWAYS ARMED 5.5" 9MM TR SERIES FLASH CAN UPPER RECEIVER - FDE Made in the USA Mil Spec AR15 Upper Receiver 1/2 x 36 thread pitch 5.5" 1:10 Twist 4150 Steel Barrel 7" TR Series Free Float M-LOK Rail Flash Can Muzzle Device Finished in Flat Dark...Sale: $219.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 7.5" .300 BLACKOUT STAINLESS STEEL UPPER RECEIVER - BLACK
Sale: $179.00MSRP: $279.00ALWAYS ARMED 7.5" .300 BLACKOUT STAINLESS STEEL UPPER RECEIVER - 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...Sale: $179.00MSRP: $279.00 -
On Sale
Ghost Firearms 7.5" .300 Blackout Flash Can Upper Receiver Pistol Kit - Burnt Bronze
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Finished in Burnt Bronze Cerakote Milspec 7075-T6 Upper Receiver 7.5" 1:8 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) .750 Low Profile Gas Block Pistol Length...Sale: $449.00MSRP: $599.00 -
On Sale
Ghost Firearms 7.5" 9mm with M-Lok 7" Pistol Kit - OD Green
Sale: $449.00MSRP: $699.00Ghost Firearms 7.5" Pistol Kit - OD Green Magpul OD Green Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging Handle A2 Flash Hider 1/2x36 Thread Pattern 7.5" 1:10 Twist 4150 Chrome Moly...Sale: $449.00MSRP: $699.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Finished in Tungsten Gray Cerakote 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 -
Out of stockOn Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Tequila Sunrise
Sale: $329.00MSRP: $399.00Grid Defense 7.5" 5.56 NATO Flash Can Upper Receiver - Tequila Sunrise Finished in Tequila Sunrise Cerakote 5.56 Flash Can Upper Made in the USA 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Octagon M-Lok Hand Guard Dimpled Flash Can 7075-T6...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Zombie Green
Sale: $329.00MSRP: $399.00GRID DEFENSE 7.5" 5.56 FLASH CAN UPPER RECEIVER - ZOMBIE GREEN Finished in Zombie Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 7.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO Pistol Length Gas System ...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 7.5" 9MM STAINLESS STEEL UPPER RECEIVER - BURNT BRONZE
Sale: $239.00MSRP: $319.00ALWAYS ARMED 7.5" 9MM STAINLESS STEEL UPPER RECEIVER - BURNT BRONZE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 416R Stainless Steel Barrel Chambered in 9X19 Para A2 Flash...Sale: $239.00MSRP: $319.00 -
Out of stock
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver - BLEM
$349.00Ghost 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...$349.00 -
On Sale
Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $399.00GRID DEFENSE 7.5 Upper With Flash Can - 5.56 Upper Receiver- TACTICAL GRAPE Finished in Purple Cerakote Chambered in 5.56x45 NATO 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride Dimpled Flash Can 9" Grid Defense Octagon Rail Pistol Length Gas System...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER - BLUE TITANIUM
Sale: $209.00MSRP: $299.00ALWAYS ARMED 7.5" 5.56 NATO 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 System .750 Low Profile Gas...Sale: $209.00MSRP: $299.00 -
On Sale
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Burnt Bronze
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Finished in Burnt Bronze Cerakote Ghost Firearms 7.5" Upper Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block...Sale: $449.00MSRP: $599.00 -
On Sale
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Tungsten Gray
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Upper Receiver pistol kit, the new Ghost Firearms AR build kit. Finished in tungsten gray cerakote. Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45...Sale: $449.00MSRP: $599.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - MAGPUL FDE
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout TR Series Upper Receiver - Magpul FDE 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: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 7.5" STAINLESS STEEL 9MM QUAD RAIL COMPLETE UPPER RECEIVER WITH BCG/CH - BLACK
Sale: $220.00MSRP: $457.00ALWAYS ARMED 7.5" STAINLESS STEEL 9MM QUAD RAIL UPPER RECEIVER WITH BCG/CH - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver 7" Quad Rail MLOK Hand Guard 7.5" 1:10 Twist 416R Stainless Steel Barrel Chambered 9X19 Para A2 Flash Hider 1/2x36...Sale: $220.00MSRP: $457.00 -
On Sale
Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $399.00Grid Defense 7.5" .300 Blackout Pistol Upper Receiver - Tactical Grape Made in the USA Chambered in .300 Blackout (7.62x35) 7.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System .750 Low Profile Gas Block Dimpled Flash...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Zombie Green
Sale: $329.00MSRP: $399.00GRID DEFENSE 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER - ZOMBIE GREEN Finished in Zombie Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 7.5" 1:8 Twist 4150 Barrel - Black Nitride Chambered in .300 Blackout Pistol Length Gas System .750...Sale: $329.00MSRP: $399.00 -
Out of stock
ALWAYS ARMED COMPLETE 7.5" 5.56 NATO UPPER RECEIVER WITH 7" KEYMOD RAIL, BCG, CHARGING HANDLE & SIGHTS
$399.00ALWAYS ARMED COMPLETE 7.5" 5.56 NATO 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 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length Gas...$399.00