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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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 -
Ghost Firearms 16" 300 AAC Blackout with 14" M-Lok Rifle Kit - Tungsten Gray
Sale: $449.00MSRP: $599.00Ghost Firearms 16".300 AAC Rifle Kit -Tungsten Gray Tungsten Gray 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 Steel Barrel Black...Sale: $449.00MSRP: $599.00 -
GHOST VITAL 7.5" 9MM PISTOL KIT
Sale: $369.00MSRP: $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: $369.00MSRP: $679.00 -
Grid Defense 10.5" .300 Blackout Upper Receiver - OD Green
Sale: $279.00MSRP: $379.00Grid Defense 10.5" .300 Blackout Upper Receiver - OD Green Finished in Magpul Olive Drab Green 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...Sale: $279.00MSRP: $379.00 -
Ghost Firearms 16" A2 Front Sight Upper with Rear Sight
$349.00Ghost Firearms 5.56 Complete Upper Receiver with A2 Front Sight 16” 1:7 Twist Chrome Moly Barrel, M4 Profile Chambered in .223/5.56 Direct Gas Impingement Gas System A-2 Flash Hider A-2 Handguard A2 Front Sight Gas Block Rear Flip Sight...$349.00 -
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Blue Titanium
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Finished in Blue Titanium Cerakote 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...Sale: $449.00MSRP: $599.00 -
ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 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: $199.00MSRP: $299.00 -
ALWAYS ARMED 16" 7.62X39 UPPER RECEIVER - BLACK ANODIZED
Sale: $199.00MSRP: $299.00Always Armed 16" 7.62X39 Upper Receiver - Black Anodized Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62X39 Carbine Length Gas System .750...Sale: $199.00MSRP: $299.00 -
ALWAYS ARMED 5.5" 9MM STAINLESS STEEL TR SERIES UPPER RECEIVER WITH 4" RAIL - BLACK
Sale: $189.00MSRP: $269.00ALWAYS ARMED 5.5" 9MM SS TR SERIES UPPER RECEIVER WITH 4" RAIL - BLACK Made in the USA Mil Spec AR15 Upper Receiver 5.5" 1:10 Twist 416R Stainless Steel Barrel 4" Free Float M-LOK Rail Flash Can Muzzle Device Hard Coat Black Anodized...Sale: $189.00MSRP: $269.00 -
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO RIFLE KIT - BLACK
Sale: $349.00MSRP: $469.00ALWAYS ARMED OCTO SERIES 16" 5.56 NATO RIFLE KIT 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: $349.00MSRP: $469.00 -
Ghost Fireams Elite 16" Upper 9MM - OD Green
Sale: $269.00MSRP: $349.00Ghost Firearms Elite 16" Upper 9MM - OD Green Chambered in 9x19 Para A2 Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 14" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $269.00MSRP: $349.00 -
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 10.5" 5.56 Pistol Kit - Burnt Bronze
Sale: $439.00MSRP: $579.00Ghost 10.5" 5.56 Pistol Kit - Burnt Bronze Burnt Bronze 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 Nitride...Sale: $439.00MSRP: $579.00 -
GHOST ELITE 7.5" UPPER 5.56 NATO - TACTICAL GRAPE
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" 5.56 - Tactical Grape Tactical Grape 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 7"...Sale: $259.00MSRP: $329.00 -
Ghost Fireams 7.5" 9mm with M-Lok 7" Pistol Kit - FDE
Sale: $389.00MSRP: $699.00Ghost Firearms 7.5" Pistol Kit - FDE Magpul Flat Dark Earth Cerakote Finish Chambered in 9mm 9mm Bolt Carrier Group (Colt and Glock cut) Mil-spec Charging Handle A2 Flash Hider 7.5" 1:10 Twist 4150 Chrome Moly Steel Barrel Black Nitride...Sale: $389.00MSRP: $699.00 -
Ghost Firearms Vital 16" 9mm Upper Receiver - Black
Sale: $224.00MSRP: $299.00Ghost Firearms Vital 16" 9MM Upper - Black Chambered in 9x19 Para A2 Birdcage Flash Hider 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost Mil-Spec...Sale: $224.00MSRP: $299.00 -
ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout Upper Receiver - Ridgeway Blue 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...Sale: $209.00MSRP: $299.00 -
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 -
ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER - SIG PINK
Sale: $209.00MSRP: $299.00Always Armed 7.5" 5.56 NATO Upper Receiver - Sig Pink 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 NATO Pistol Length Gas System .750 Low...Sale: $209.00MSRP: $299.00 -
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