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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Out of stockOn Sale
Ghost 18" .308 Winchester Billet Upper - Olive Drab Green
Sale: $409.00MSRP: $539.00Ghost 18" .308 Winchester Billet Upper - Olive Drab Green Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern A2 Flash Hider...Sale: $409.00MSRP: $539.00 -
On Sale
Grid Defense 18" 350 Legend Upper Receiver - OD Green
Sale: $349.00MSRP: $419.00Grid Defense 18" 350 Legend Upper Receiver - OD Green Magpul OD Green Cerakote Finish Chambered in 350 Legend A2 Flash Hider 18" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System Grid Defense 14" M-Lok Free Float Hand Guard Grid Defense...Sale: $349.00MSRP: $419.00 -
Out of stockOn Sale
Grid Defense 18" .308 Winchester Billet Upper - OD Green
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - OD Green Billet DPMS Pattern High Profile Upper Receiver 18" 4150 Chrome Moly Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch Axe Brake Muzzle...Sale: $439.00MSRP: $579.00 -
On Sale
Grid Defense 18" 6mm ARC Upper Receiver - OD Green
Sale: $329.00MSRP: $419.00Grid Defense 18" 6mm ARC Upper Receiver - OD Green Finished in OD Green Cerakote Chambered in 6mm ARC 14" Free Float M-Lok Rail 18" 4150 Heavy Profile Barrel - Black Nitride 1:8 Twist Rate .750 Mid Length Gas System 5/8x24 Thread Pitch A2 Flash...Sale: $329.00MSRP: $419.00 -
On Sale
Ghost 18" 350 Legend Rifle Kit - OD Green
Sale: $449.00MSRP: $519.00Ghost 18" 350 Legend Rifle Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:16 Twist 4150 Barrel with Black Nitride Finish Chambered in 350 Legend Carbine Length Gas System .750 Low Profile...Sale: $449.00MSRP: $519.00 -
On Sale
Ghost 18" 6mm ARC Rifle Kit - OD Green
Sale: $449.00MSRP: $519.00Ghost 18" 6mm ARC Rifle Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 18" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 6mm ARC Mid Length Gas System .750 Low Profile Gas...Sale: $449.00MSRP: $519.00 -
On Sale
Grid Defense 18" 6.5 Creedmoor Billet Upper - OD Green
Sale: $389.00MSRP: $579.00Grid Defense 18" 6.5 Creedmoor Billet Upper - OD Green Upper Specifications Billet Upper Receiver Machined from 6061 Aluminum Fits DPMS Gen 1 Lower Receivers Made in the USA High Profile 15" Free Float M-LOK Handguard Finished in OD Green...Sale: $389.00MSRP: $579.00 -
Out of stockOn Sale
Ghost 18" .308 Winchester Billet Rifle Kit - OD Green
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - OD Green Billet DPMS Pattern High Profile Upper 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch A2 Flash Hider 15" M-LOK Free...Sale: $609.00MSRP: $739.00