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.
-
On Sale
Grid Defense 10.5" .300 Blackout Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $379.00Grid Defense 10.5" .300 Blackout Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 4150 Steel Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) A2 Muzzle Device Pistol Length Gas...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper ReceiverSale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Finished in Magpul Flat Dark Earth 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...Sale: $299.00MSRP: $379.00 -
Out of stockOn 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 TR SERIES 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE
Sale: $229.00MSRP: $319.00ALWAYS ARMED TR SERIES 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine...Sale: $229.00MSRP: $319.00 -
On Sale
GHOST 16" .308 WINCHESTER UPPER RECEIVER WITH 12" M-LOK RAIL - BLACK
Sale: $319.00MSRP: $449.00GHOST 16" .308 WINCHESTER UPPER RECEIVER WITH 12" M-LOK RAIL - BLACK DPMS Pattern Upper (Low Profile) Mil-Spec Dust Cover and Forward Assist 16" 4150 HBAR Contour Barrel - Black Nitride Mid-length gas system Chambered in .308 Winchester with a 1:10...Sale: $319.00MSRP: $449.00 -
On Sale
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Blue Titanium Blue Titanium Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper ReceiverSale: $329.00MSRP: $399.00 -
ALWAYS ARMED 10.5" 5.56 NATO TR SERIES WITH TRINITY FORCE SIGHTS PISTOL KIT - BLACK ANODIZED
$489.00Always Armed 10.5" 5.56 NATO TRX 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 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered...$489.00 -
On Sale
ALWAYS ARMED Jester 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL- BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine...Sale: $199.00MSRP: $299.00 -
On Sale
Ghost 16" .308 Winchester Billet Rifle Kit - FDE
Sale: $599.00MSRP: $729.00Ghost 16" .308 Winchester Billet Rifle Kit - FDE Billet DPMS Pattern High Profile Upper 16" 4150 Chrome Moly HBAR Contour Barrel Mid Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch A2 Flash Hider 15" M-LOK...Sale: $599.00MSRP: $729.00 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - Burnt Bronze
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Finished in Burnt Bronze Cerakote Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas System Ghost...Sale: $449.00MSRP: $599.00 -
On Sale
Ghost Firearms 16" 300 Blackout with 14" M-Lok Rifle Kit - OD Green
Sale: $449.00MSRP: $599.00Ghost Firearms 16" .300 AAC AR-15 Rifle Kit - Olive Drab Green OD Green Cerakote Finish Chambered in 300 AAC Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:8 Twist 4150 Chrome Moly...Sale: $449.00MSRP: $599.00 -
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
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 -
Out of stockOn 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
Ghost Vital 16" Upper .300 Blackout With 11" Rail - Black
Sale: $239.00MSRP: $299.00Ghost Vital 16" Upper .300 Blackout With 11" Rail - Black Chambered in .300 Blackout (7.62x35) 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $239.00MSRP: $299.00 -
On Sale
Grid Defense 10.5" 5.56 Upper Receiver - Burnt Bronze
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 5.56 Upper Receiver Finished in Burnt Bronze 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 -
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 -
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