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
Ghost Elite 16" Upper 5.56 Nato Burnt Bronze
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" 5.56 Upper - Burnt Bronze AR15 UPPER Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 14"...Sale: $269.00MSRP: $349.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - 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 .750...Sale: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO RIFLE KIT - BURNT BRONZE
Sale: $379.00MSRP: $529.00Always Armed 16" 5.56 NATO Rifle Kit - 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 .750...Sale: $379.00MSRP: $529.00 -
On Sale
Ghost Firearms Elite 16" Upper .300 AAC Blackout - Burnt Bronze
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16".300 AAC Upper - Burnt Bronze Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14" M-Lok Free Float...Sale: $269.00MSRP: $349.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE
Sale: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 16" Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...Sale: $219.00MSRP: $319.00 -
On Sale
Grid Defense 16" 5.56 Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 AR-15 Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Burnt Bronze Complete Upper Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec...Sale: $329.00MSRP: $399.00 -
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 Nitride Ghost Firearms 14" M-Lok Free Float...Sale: $269.00MSRP: $349.00 -
On Sale
Ghost Fireams 16" 300 AAC Blackout with 14" M-Lok Rifle Kit - Burnt Bronze
Sale: $449.00MSRP: $599.00Ghost Firearms 16".300 AAC Rifle Kit - Burnt Bronze Burnt Bronze Cerakote Finish Burnt Bronze AR-15 Kit Chambered in 300 AAC Blackout (7.62x35mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:8 Twist 4150 Chrome...Sale: $449.00MSRP: $599.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - BURNT BRONZE
Sale: $219.00MSRP: $299.00ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - BURNT BRONZE Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Burnt Bronze Cerakote Finish Carbine Length Gas System A2 Muzzle Device 1:7...Sale: $219.00MSRP: $299.00 -
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
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - BURNT BRONZE
Sale: $219.00MSRP: $319.00ALWAYS ARMED OCTO SERIES 16" 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 15" Free Float M-LOK OCTO Series Rail 16" 1:7 Twist Barrel with...Sale: $219.00MSRP: $319.00 -
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
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 -
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 -
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
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
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
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