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 Firearms Elite 7.5" Upper 9MM Tungsten Gray
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper 9MM - Tungsten Gray Chambered in 9x19MM Para A2 Flash Hider 1/2x36 Thread Pattern 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $259.00MSRP: $329.00 -
On Sale
7.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 10" MLOK HAND GUARD
Sale: $209.00MSRP: $299.007.5" 5.56 NATO Flash Can Upper Receiver With 10" MLOK Hand Guard Made in the USA Mil Spec 7075 T6 Upper Receiver 7.5" 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO 10" Free Floating MLOK Hand Guard Pistol Length Gas System 7.5...Sale: $209.00MSRP: $299.00 -
On Sale
Ghost Elite 7.5" Upper 5.56 Nato Blue Titanium
Sale: $259.00MSRP: $329.00Ghost Firearms 7.5"5.56 Upper - Blue Titanium Blue Titanium Cerakote Finished Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost Firearms...Sale: $259.00MSRP: $329.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - BAZOOKA GREEN
Sale: $219.00MSRP: $319.00Always Armed 16" 5.56 NATO Upper Receiver - Bazooka Green 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 Elite 7.5" 7.62x39 Upper - FDE
Sale: $259.00MSRP: $329.00Ghost Elite 7.5" 7.62x39 Upper - FDE A2 Flash Hider 7.5" 1:10 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 Flat Dark...Sale: $259.00MSRP: $329.00 -
On Sale
Ghost Firearms Elite 7.5" Upper 9MM Burnt Bronze
Sale: $279.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper - Burnt Bronze A2 Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6 Upper Receiver Made in the USA...Sale: $279.00MSRP: $329.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout Upper Receiver - Burnt Bronze 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 Length Gas System .750...Sale: $209.00MSRP: $299.00 -
On Sale
Grid Defense 7.5" 9mm Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 7.5" 9mm Flash Can Upper Receiver - Flat Dark Earth Finished in Magpul FDE Cerakote Grid Defense 7.5" Upper Receiver Mil Spec 7075-T6 Upper Receiver 7.5" 1:10 Twist 4150 Light HBar Barrel - Black Nitride 9" Grid Defense Octagon M-Lok Rail...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Vital 7.5" Upper - 7.62x39
Sale: $239.00MSRP: $299.00Ghost Vital 7.5" Upper - 7.62x39 Chambered in 7.62x39 A2 Birdcage Flash Hider 7.5" 1:10 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6 Upper...Sale: $239.00MSRP: $299.00 -
On Sale
Ghost Firearms Elite 7.5" Upper 9MM Magpul OD Green
Sale: $239.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper 9MM - OD Green Chambered in 9x19MM Para A2 Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6...Sale: $239.00MSRP: $329.00 -
On Sale
Ghost Firearms Elite 7.5" Upper 9MM - FDE
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper 9MM - Flat Dark Earth Chambered in 9x19MM Para A2 Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $259.00MSRP: $329.00 -
On Sale
Ghost Elite 7.5" Upper 5.56 Nato - Tungsten Gray
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" Upper - Tungsten Grey Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost...Sale: $259.00MSRP: $329.00 -
On Sale
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Made in the USA Hard Coat Black Anodized 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 Black...Sale: $199.00MSRP: $299.00 -
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
Ghost Firearms Elite 16" Upper .300 AAC Blackout - Tungsten Gray
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16".300 AAC - Tungsten Gray Chambered in .300 Blackout (7.62x35) A2 Birdcage Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14" M-Lok Free...Sale: $269.00MSRP: $349.00 -
On Sale
Ghost Firearms Elite 7.5" Upper .300 Blackout Blue Titanium
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" .300 - Blue Titanium Chambered in .300 Blackout (7.62x35) 7.5" Upper A2 Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float...Sale: $259.00MSRP: $329.00 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - BLACK
Sale: $209.00MSRP: $269.00ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - BLACK 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 Length Gas System .750...Sale: $209.00MSRP: $269.00 -
On Sale
Always Armed 16" .300 Blackout TR Series Upper Receiver - Black
Sale: $199.00MSRP: $299.00Always Armed 16" .300 Blackout TR Series Upper Receiver - Black Made in the USA 16" 4150 Barrel Chambered in .300 Blackout 1:8 Twist 15" TR Series Free Floating M-LOK Hand Guard Black Anodized Finish Pistol Length Gas System .750 Low Profile Gas Block...Sale: $199.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO RIFLE KIT - SMITH & WESSON RED
Sale: $379.00MSRP: $529.00Always Armed 16" 5.56 NATO Rifle Kit -Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 or 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length...Sale: $379.00MSRP: $529.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO RIFLE KIT - RIDGEWAY BLUE
Sale: $379.00MSRP: $529.00Always Armed 16" 5.56 NATO Rifle Kit - Ridgeway Blue Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 or 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System ...Sale: $379.00MSRP: $529.00