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 18" 6mm ARC Rifle Kit - Tungsten Gray
Sale: $449.00MSRP: $519.00Ghost 18" 6mm ARC Rifle Kit - Tungsten Gray 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...Sale: $449.00MSRP: $519.00 -
Out of stockOn Sale
Ghost 20" 6.5 Grendel Rifle Kit - Tungsten Gray
Sale: $459.00MSRP: $529.00Ghost 20" 6.5 Grendel Rifle Kit - Tungsten Gray Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free Float Handguard Barrel Specifications 20" Heavy Profile...Sale: $459.00MSRP: $529.00 -
On Sale
GHOST STAINLESS STEEL 10.5" .223 WYLDE PISTOL KIT - TUNGSTEN GRAY
Sale: $439.00MSRP: $579.00GHOST STAINLESS STEEL 10.5" .223 WYLDE RIFLE KIT - TUNGSTEN GRAY Finished in Tungsten Gray Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch 9" Free Float M-LOK Handrail Stainless A2 Muzzle Device...Sale: $439.00MSRP: $579.00 -
On Sale
GHOST STAINLESS STEEL 16" .223 WYLDE RIFLE KIT - TUNGSTEN GRAY
Sale: $449.00MSRP: $599.00GHOST STAINLESS STEEL 16" .223 Wylde RIFLE KIT - TUNGSTEN GRAY Finished in Tungsten Gray Cerakote Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 14" Free Float M-LOK Handrail Stainless A2 Muzzle...Sale: $449.00MSRP: $599.00 -
Out of stockOn Sale
Grid Defense 16" .308 Winchester Billet Upper - Tungsten Gray
Sale: $429.00MSRP: $569.00Grid Defense 16" .308 Winchester Billet Upper - Tungsten Gray Billet DPMS High Profile Pattern upper 16" 4150 chrome moly barrel Mid-length gas system Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch Axe Brake Muzzle...Sale: $429.00MSRP: $569.00 -
On Sale
GRID DEFENSE 16" .450 BUSHMASTER UPPER RECEIVER - TUNGSTEN GRAY
Sale: $349.00MSRP: $419.00Grid Defense 16" .450 Bushmaster Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Chambered in .450 Bushmaster 14" Free Floating M-Lok Handrail 16" 4150 Black Nitride Barrel 1:24 Twist Rate 11/16x24 TPI Thread Pitch .875 Gas...Sale: $349.00MSRP: $419.00 -
On Sale
Grid Defense 16" 9mm Stainless Steel Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Stainless Steel Upper Receiver - Tungsten Gray Milspec 7075-T6 Upper Receiver Finished in Tungsten Gray Cerakote 16" 416R Stainless Steel Barrel with 1:10 Twist Rate 1/2x36 Thread Pattern 14" Grid Defense Octagon M-Lok...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 18" 6.5 Creedmoor Billet Upper - Tungsten Gray
Sale: $389.00MSRP: $579.00Grid Defense 18" 6.5 Creedmoor Billet Upper - Tungsten Gray 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 Tungsten...Sale: $389.00MSRP: $579.00 -
On Sale
Grid Defense 20" 350 Legend Upper Receiver - Tungsten Gray
Sale: $349.00MSRP: $419.00Grid Defense 20" 350 Legend Upper Receiver - Tungsten Gray Tungsten Gray Cerakote Finish Chambered in 350 Legend A2 Flash Hider 20" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System Grid Defense 18" M-Lok Free Float Hand...Sale: $349.00MSRP: $419.00 -
On Sale
Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $399.00Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - Tungsten Gray Tungsten Gray Cerakote Finish Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch Stainless A2 Muzzle Device Carbine Length Gas System...Sale: $329.00MSRP: $399.00