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 7.5" 5.56 FLASH CAN UPPER RECEIVER WITH TACTICAL GRAPE 9" RAIL
Sale: $299.00MSRP: $349.00GHOST FIREARMS 7.5" 5.56 FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver - Black Anodized 7.5" 1:7 Twist 4150 Steel Barrel Pistol Length Gas System .750 Low Profile Gas Block Hard Coat Black Anodized...Sale: $299.00MSRP: $349.00 -
On Sale
Ghost Firearms 7.5" 9mm Blast Can Upper Receiver - Black
Sale: $279.00MSRP: $329.00Ghost Firearms 7.5" 9mm Flash Can Upper Receiver - Black Proudly Made in the USA Chambered in 9mm 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:10 Twist 4150 Barrel 1/2x36 Thread Pattern Stubby Blast Can Muzzle Device 7" Ghost...Sale: $279.00MSRP: $329.00 -
On Sale
Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle
Sale: $259.00MSRP: $379.00Grid Defense 7.5" 5.56 Upper Receiver - Periwinkle Finished in Periwinkle Cerakote AR15 Skeletonized Upper 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...Sale: $259.00MSRP: $379.00 -
On Sale
ALWAYS ARMED 7.5" 9MM PISTOL KIT - SIG PINK
Sale: $359.00MSRP: $579.00Always Armed 7.5" 9mm Rifle Kit - Sig Pink Made in the USA Mil-Spec Lower Parts Kit 7.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9X19 Para A2 Flash Hider 7" Free Float M-LOK Hand Guard Bolt Carrier Group Charging Handle ...Sale: $359.00MSRP: $579.00 -
On Sale
Grid Defense 6" .300 Blackout Flash Can Upper Receiver - Black
Sale: $329.00MSRP: $399.00Grid Defense 6" .300 Blackout Pistol Upper Receiver - Black Chambered in .300 Blackout 6" 1:7 Twist 4150 Light HBar Barrel - Black Nitride 7075-T6 Milspec Upper Receiver Pistol Length Gas System .750 Low Profile Gas Block Dimpled Flash...Sale: $329.00MSRP: $399.00 -
On Sale
Ghost Vital 7.5" 5.56 Stainless Steel Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 7.5" 5.56 Upper Stainless Steel - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider - Black 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas System Ghost Firearms 7" M-Lok Free...Sale: $419.00MSRP: $479.00