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.
-
Out of stockOn Sale
Grid Defense 16" 8.6 Blackout Billet Upper - Black
Sale: $429.00MSRP: $569.00Grid Defense 16" 8.6 Blackout Billet Upper - Black Billet DPMS High Profile Pattern upper 16" 4150 chrome moly barrel Carbine length gas system Chambered in 8.6 Blackout 1:10 Twist Rate 5/8x24 TPI Thread Pitch .750 Gas Block A2 Flash Hider...Sale: $429.00MSRP: $569.00 -
Out of stockOn Sale
Grid Defense 16" 8.6 Blackout Billet Upper - FDE
Sale: $429.00MSRP: $569.00Grid Defense 16" 8.6 Blackout Billet Upper - FDE Billet DPMS High Profile Pattern upper 16" 4150 chrome moly barrel Carbine length gas system Chambered in 8.6 Blackout 1:10 Twist Rate 5/8x24 TPI Thread Pitch .750 Gas Block A2 Flash Hider Muzzle...Sale: $429.00MSRP: $569.00 -
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 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 -
Out of stock
Grid Defense Limited Edition 16" 5.56 NATO Upper with Strike Industries Accessories - Periwinkle/Blue
$502.85Grid Defense 16" 5.56 Upper Receiver - Periwinkle Periwinkle Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper Receiver Strike Industries...$502.85 -
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 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Black
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Black Finished in Hard Coat Black Anodize Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 16" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas...Sale: $329.00MSRP: $429.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Tactical Grape Tactical Grape Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 16" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas...Sale: $329.00MSRP: $429.00 -
On Sale
Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Pink Champagne
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Upper Receiver With 12" Rail - Pink Champagne Pink Champagne Cerakote Finish Chambered in 5.56 1:7 Twist Rate 1/2x28 TPI Thread Pitch 12" Free Float M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - Burnt Bronze
Sale: $339.00MSRP: $409.00Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in .223 Wylde 16" 416R Stainless Steel Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch Black A2 Muzzle Device Carbine Length Gas...Sale: $339.00MSRP: $409.00 -
Out of stockOn Sale
Grid Defense 20" 6.5 Grendel Upper Receiver - FDE
Sale: $329.00MSRP: $419.00Grid Defense 20" 6.5 Grendel Upper Receiver - FDE 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 Finished in Magpul Flat Dark Earth...Sale: $329.00MSRP: $419.00