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
Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00GRID DEFENSE 10.5" .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - FDE Finished in Magpul Flat Dark Earth Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout (7...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE
Sale: $209.00MSRP: $299.00Always Armed 10.5" 300 Blackout Upper Receiver - Magpul FDE 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...Sale: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL
Sale: $189.00MSRP: $299.00ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist Upper Finished in Hard Coat Black Anodize 10.5" 1:8 Twist 4150 Barrel with Black...Sale: $189.00MSRP: $299.00 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - FDE
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Finished in Magpul Flat Dark Earth Cerakote Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas...Sale: $449.00MSRP: $599.00