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.
-
On Sale
GHOST ELITE 16" UPPER 5.56 NATO - ZOMBIE GREEN
Sale: $269.00MSRP: $349.00GHOST ELITE 16" UPPER 5.56 NATO - ZOMBIE GREEN Zombie Green Cerakote Finished 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 - ZOMBIE GREEN
Sale: $219.00MSRP: $319.00Always Armed 16" 5.56 NATO Upper Receiver - Zombie 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 .750...Sale: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN
Sale: $219.00MSRP: $319.00ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN Made in the USA Zombie Green 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 -
On Sale
ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - ZOMBIE GREEN
Sale: $219.00MSRP: $319.00ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - ZOMBIE GREEN Made in the USA Zombie Green Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:8 Twist Barrel with...Sale: $219.00MSRP: $319.00 -
On Sale
Ghost Fireams 16" 300 AAC Blackout with 14" M-Lok Rifle Kit - Zombie Green
Sale: $449.00MSRP: $599.00Ghost Firearms 16".300 AAC Rifle Kit - Zombie Green Zombie Green Cerakote Finish M16 Bolt Carrier Group Chambered in .300 Blackout Mil-spec Charging Handle A2 Flash Hider 16" 1:8 Twist 4150 Chrome Moly Steel Barrel Black Nitride Pistol...Sale: $449.00MSRP: $599.00