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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Always Armed 7.5" 7.62x39 Upper Receiver
Sale: $189.00MSRP: $249.00Always Armed 7.5" 7.62x39 Upper Receiver Chambered in 7.62x39 A2 Birdcage Flash Hider 7.5" 1:10 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System 7" M-Lok Free Float Hand Guard Mil-Spec 7075 T6 Upper Receiver Mil-Spec...Sale: $189.00MSRP: $249.00 -
ALWAYS ARMED OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK 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: $199.00MSRP: $299.00 -
GHOST VITAL 7.5" 9MM PISTOL KIT
Sale: $429.00MSRP: $679.00GHOST VITAL 7.5" UPPER PISTOL KIT Chambered in 9x19 Para A2 Birdcage 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...Sale: $429.00MSRP: $679.00 -
GRID DEFENSE 16" .300 BLACKOUT UPPER RECEIVER - BLACK
Sale: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Upper Receiver - Black Hard Coat Black Anodized Chambered in 300 Blackout (7.62x35) 14" M-Lok Rail 16" 1:8 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper...Sale: $329.00MSRP: $399.00 -
GRID DEFENSE 16" 7.62x39 UPPER RECEIVER - BLACK
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - Black Hard Coat Black Anodized Chambered in 7.62x39 14" M-Lok Rail 16" 1:10 4150 Light HBar Barrel - Black Nitride A2 Flash Hider Carbine Length Gas System Mil-Spec 7075-T6 Upper ReceiverSale: $329.00MSRP: $399.00 -
GRID DEFENSE 16" 9MM COMPLETE UPPER ASSEMBLY
$667.50GRID DEFENSE 16" 9MM COMPLETE UPPER ASSEMBLY Hard Coat Black Anodized Chambered in 9x19 Para 14" M-Lok Rail 16" 1:10 4150 Light HBar Barrel - Black Nitride A2 Flash Hider Mil-Spec 7075-T6 Upper Receiver Titanium Nitride BCG Ambidextrous...$667.50 -
Grid Defense 7.5" 5.56 Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver Finished in Magpul Flat Dark Earth 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...Sale: $299.00MSRP: $379.00 -
Grid Defense 16" 7.62x39 Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 7.62x39 Upper Receiver - OD Finished in Magpul Olive Drab Green Chambered in 7.62x39 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride A2 Muzzle Device 14" Free Floating M-Lok Rail Milspec 7075-T6 Upper Receiver Carbine Gas...Sale: $329.00MSRP: $399.00 -
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 -
Ghost Vital 16" Upper 5.56 Nato with BCG/Charging Handle, AXE Brake and Sights
$449.00Ghost Firearms Vital 16" Upper Chambered in 5.56x45 NATO (5.56/.223) AXE Brake 16" 1:7 or 1:8 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost...$449.00 -
Grid Defense 16" 300 Blackout Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - Flat Dark Earth FDE Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System Grid Defense 14" M-Lok Free Float Hand...Sale: $329.00MSRP: $399.00 -
Grid Defense 16" 300 Blackout Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - OD Green OD Green Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System Grid Defense 14" M-Lok Free Float Hand...Sale: $329.00MSRP: $399.00 -
Ghost Firearms 10.5" 5.56 NATO Pistol Kit - FDE
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5" 5.56 NATO Pistol Kit - FDE Flat Dark Earth (FDE) Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $439.00MSRP: $579.00 -
Ghost Firearms 7.5" .300 Blackout Flash Can Upper Receiver Pistol Kit - Tungsten Gray
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Finished in Tungsten Gray Cerakote Milspec 7075-T6 Upper Receiver Upper Receiver Pistol Kit 7.5" 1:8 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) .750 Low...Sale: $449.00MSRP: $599.00 -
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Black Anodized
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit The new AR15 build kits with Mil-Spec complete upper receiver and flash can. Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride...Sale: $449.00MSRP: $599.00 -
ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...Sale: $189.00MSRP: $279.00 -
ALWAYS ARMED 10.5" 5.56 NATO BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" 5.56 NATO BX SERIES UPPER RECEIVER 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 Length Gas System .750...Sale: $189.00MSRP: $279.00 -
Ghost Firearms Elite 16" Upper 7.62X39 - BLACK ANODIZED
Sale: $249.00MSRP: $319.00GHOST FIREARMS ELITE 16" UPPER RECEIVER | BLACK ANODIZED 7.62X39 UPPER Chambered in 7.62x39 A2 Flash Hider 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Carbine Length Gas System Ghost Firearms 14" M-Lok Free Float...Sale: $249.00MSRP: $319.00 -
Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tungsten Gray Tungsten Gray 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 16" 5.56 NATO RIFLE KIT WITH BI-POD AND SIGHTS - BLACK ANODIZED
Sale: $349.00MSRP: $598.49ALWAYS ARMED 16" 5.56 NATO RIFLE KIT WITH BI-POD AND SIGHTS - BLACK ANODIZED 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...Sale: $349.00MSRP: $598.49