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.
-
Out of stockOn Sale
Ghost Firearms 16" .308 Winchester Billet Upper - Burnt Bronze
Sale: $399.00MSRP: $529.00Ghost Firearms 16" .308 Winchester Billet Upper - Burnt Bronze Billet DPMS Pattern High Profile Upper Receiver 16" 4150 Chrome Moly HBAR Contour Barrel, Mid Length Gas System Chambered in .308 Winchester with a 1:10 Twist Rate 5/8x24 with A2 Flash...Sale: $399.00MSRP: $529.00 -
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 -
Out of stockOn Sale
Grid Defense 20" .308 Winchester Billet Upper - Burnt Bronze
Sale: $449.00MSRP: $589.00Grid Defense 20" .308 Upper Receiver - Burnt Bronze DPMS Pattern upper 20" 4150 Chrome Moly Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern Axe Brake Muzzle Device 15" M-LOK Free Floating Rail Finished in Burnt...Sale: $449.00MSRP: $589.00 -
On Sale
ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER - BURNT BRONZE
Sale: $219.00MSRP: $319.00ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750 Low...Sale: $219.00MSRP: $319.00 -
Out of stockOn Sale
Grid Defense 18" .308 Winchester Billet Upper - Burnt Bronze
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - Burnt Bronze Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch Axe Brake Muzzle...Sale: $439.00MSRP: $579.00 -
On Sale
ALWAYS ARMED OCTO SERIES 10.5" 5.56 NATO UPPER RECEIVER - BURNT BRONZE
Sale: $209.00MSRP: $299.00ALWAYS ARMED OCTO SERIES 10.5" 5.56 NATO UPPER RECEIVER - BURNT BRONZE Made in the USA Burnt Bronze Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5" 1:7 Twist Barrel...Sale: $209.00MSRP: $299.00 -
On Sale
Ghost Firearms 16" 9MM Rifle Kit- BURNT BRONZE
Sale: $459.00MSRP: $729.00GHOST FIREARMS 16" 9MM RIFLE KIT Finished in Burnt Bronze Cerakote Chambered in 9x19 Para 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Black Nitride Barrel 14" Ghost Firearms Free Float M-LOK Rail A2 Muzzle Device Mil-Spec 7075-T6 Upper...Sale: $459.00MSRP: $729.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Pistol Length Gas System Grid Defense 14" M-Lok Free Float Hand Guard Grid...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 9" .22LR Flash Can Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 9" .22LR Flash Can Upper Receiver - Burnt Bronze 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 Burnt Bronze Cerakote...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Ghost Elite Stainless Steel 16" Upper .300 Blackout - Burnt Bronze
Sale: $329.00MSRP: $399.00Ghost Elite Stainless Steel 16" 300 Blackout Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 16" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Firearms 7.5" 5.56mm with 7" M-Lok Pistol Kit - Burnt Bronze
Sale: $379.00MSRP: $579.00Ghost Firearms 7.5" 5.56 Pistol Kit - Burnt Bronze Burnt Bronze Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel...Sale: $379.00MSRP: $579.00 -
On Sale
Grid Defense 18" 6mm ARC Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $419.00Grid Defense 18" 6mm ARC Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Chambered in 6mm ARC 14" Free Float M-Lok Rail 18" 4150 Heavy Profile Barrel - Black Nitride 1:8 Twist Rate .750 Mid Length Gas System 5/8x24 Thread...Sale: $329.00MSRP: $419.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT PISTOL KIT - BURNT BRONZE
Sale: $359.00MSRP: $499.00Always Armed 7.5" 300 Blackout Pistol Kit - Burnt Bronze Made in the USA Mil-Spec Lower Parts Kit 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...Sale: $359.00MSRP: $499.00 -
On Sale
ALWAYS ARMED TR SERIES 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL - BURNT BRONZE
Sale: $219.00MSRP: $319.00ALWAYS ARMED TR SERIES 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL - BURNT BRONZE Made in the USA Mil-Spec 7075 T6 Magpul Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Black Nitride Barrel Chambered in 5.56 NATO Carbine...Sale: $219.00MSRP: $319.00 -
On Sale
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - Burnt Bronze
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 10.5" 556 Upper Receiver Burnt Bronze Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 10.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Carbine Length Gas System Grid Defense 9" M-Lok Free Float...Sale: $299.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - BURNT BRONZE
Sale: $219.00MSRP: $319.00ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - BURNT BRONZE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length...Sale: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 12" M-LOK - BURNT BRONZE
Sale: $219.00MSRP: $319.00Always Armed 16" 5.56 NATO Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System ...Sale: $219.00MSRP: $319.00 -
On Sale
Ghost 18" .308 Winchester Billet Upper - Burnt Bronze
Sale: $409.00MSRP: $539.00Ghost 18" .308 Winchester Billet Upper - Burnt Bronze Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern A2 Flash Hider 15"...Sale: $409.00MSRP: $539.00 -
On Sale
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 -
On Sale
Grid Defense 7.5" 5.56 Upper Receiver - Burnt Bronze
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver Finished in Burnt Bronze Cerakote Mil Spec 7075-T6 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas System A2 Flash Hider Chambered in 5.56x45...Sale: $299.00MSRP: $379.00