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.
-
GRID DEFENSE 10.5" 9MM UPPER RECEIVER - BURNT BRONZE
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 9mm Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Mil Spec 7075-T6 Upper Receiver 10.5" 9MM Barrel Chrome Moly Vanadium 1:10 Twist Rate Straight Profile Barrel QPQ Corrosion Resistant Coating 9" Grid Defense...Sale: $299.00MSRP: $379.00 -
GRID DEFENSE 10.5" 9MM UPPER RECEIVER - FDE
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 9mm Upper Receiver - FDE Finished in Flat Dark Earth Cerakote Mil Spec 7075-T6 Upper Receiver 10.5" 9MM Barrel Chrome Moly Vanadium 1:10 Twist Rate Straight Profile Barrel QPQ Corrosion Resistant Coating 9" Grid Defense...Sale: $299.00MSRP: $379.00 -
GRID DEFENSE 10.5" 9MM UPPER RECEIVER - TUNGSTEN GRAY
Sale: $299.00MSRP: $379.00Grid Defense 10.5" 9mm Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Mil Spec 7075-T6 Upper Receiver 10.5" 9MM Barrel Chrome Moly Vanadium 1:10 Twist Rate Straight Profile Barrel QPQ Corrosion Resistant Coating 9" Grid...Sale: $299.00MSRP: $379.00 -
Grid Defense 16" .22LR Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $399.00Grid Defense 16" .22LR Upper Receiver - Burnt Bronze Milspec 7075-T6 Upper Receiver 16" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 14" Grid Defense Octagon M-Lok Rail Burnt Bronze Cerakote...Sale: $329.00MSRP: $399.00 -
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tactical Grape
$399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tactical Grape Tactical Grape Cerakote Finish Chambered in .300 Blackout 14" M-Lok Quad Rail 16" 1:8 4150 Barrel - Black Nitride Pistol Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper Receiver$399.00 -
Grid Defense 16" .308 Winchester Billet Upper - FDE
Sale: $429.00MSRP: $569.00Grid Defense 16" .308 Winchester Billet Upper - FDE 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 Device 15" M-LOK...Sale: $429.00MSRP: $569.00 -
Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel - Black Anodized
$429.00Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel Chambered in 5.56x45 NATO (5.56/.223) Premium Stainless Steel AXE Break Installed 16" 1:8 Twist 416R M4 Diamond Dimpled Stainless Steel...$429.00 -
Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel - Tactical Grape
$429.00Grid Defense 16" 5.56 NATO Upper Receiver with Stainless Steel Diamond Dimpled Barrel Chambered in 5.56x45 NATO (5.56/.223) Premium Stainless Steel AXE Break Installed 16" 1:8 Twist 416R M4 Diamond Dimpled Stainless Steel Barrel...$429.00 -
GRID DEFENSE 16" 5.56 NATO UPPER WITH 416R STRAIGHT FLUTED BARREL AND 12" MLOK
$429.00GRID DEFENSE 16" 5.56 NATO UPPER - STRAIGHT FLUTED BARREL Made in the USA Mil Spec AR15 Upper Receiver 16" 416R 1:8 Twist Barrel .750 Low Profile Gas Block Carbine Length Gas System Stainless Steel A2 Flash Hider and Crush Washer 12" Grid Defense M-LOK...$429.00 -
Grid Defense 16" 5.56 Quad Rail Upper Receiver with Timber Creek Accessories - Blue Titanium
$757.97Grid Defense 16" 5.56 Quad Rail Upper Receiver With Timber Creek Red Accessories - Blue Titanium Grid Defense 16" 5.56 Quad Rail Upper Receiver - Blue Titanium Blue Titanium Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Quad Rail 16" 1:7 4150 M4...$757.97 -
Grid Defense 18" .308 Winchester Billet Upper - Black
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - Black 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 Device 15"...Sale: $439.00MSRP: $579.00 -
Grid Defense 18" .308 Winchester Billet Upper - Burnt Bronze
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - Burnt Bronze 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 -
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 -
Grid Defense 18" .308 Winchester Billet Upper - Tungsten Gray
Sale: $439.00MSRP: $579.00Grid Defense 18" .308 Winchester Billet Upper - Tungsten Gray 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 -
Grid Defense 18" 350 Legend Upper Receiver - Blue Titanium
Sale: $349.00MSRP: $419.00Grid Defense 18" 350 Legend Upper Receiver - Blue Titanium Blue Titanium Cerakote Finish Chambered in 350 Legend A2 Flash Hider 18" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System 5/8x24 Thread Pitch Grid Defense 14" M-Lok Free Float...Sale: $349.00MSRP: $419.00 -
Grid Defense 20" .308 Winchester Billet Upper - FDE
Sale: $449.00MSRP: $589.00Grid Defense 20" .308 Upper Receiver - FDE DPMS Pattern upper 20" 4150 Chrome Moly Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern Axe Brake Muzzle Device 15" M-LOK Free Floating Rail Finished in Flat Dark...Sale: $449.00MSRP: $589.00 -
Grid Defense 20" 350 Legend Upper Receiver - OD Green
Sale: $349.00MSRP: $419.00Grid Defense 20" 350 Legend Upper Receiver - OD Green Magpul OD Green Cerakote Finish Chambered in 350 Legend A2 Flash Hider 20" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System Grid Defense 14" M-Lok Free Float Hand Guard Grid...Sale: $349.00MSRP: $419.00 -
Grid Defense 20" 6.5 Creedmoor Billet Upper - Black
Sale: $449.00MSRP: $589.00Grid Defense 20" 6.5 Creedmoor Upper Receiver - Black DPMS Pattern upper 20" 4150 Chrome Moly Barrel Rifle Gas System Chambered in 6.5 Creedmoor 1:8 Twist Rate 5/8x24 Thread Pattern Axe Brake Muzzle Device 15" M-LOK Free Floating Rail Black...Sale: $449.00MSRP: $589.00 -
Grid Defense 5.5" 9mm FDE Upper Receiver with Burnt Bronze Flash Can
$409.00Grid Defense 5.5" 9mm FDE Upper Receiver with Burnt Bronze Flash Can Upper And Rail Finished in Magpul FDE Cerakote 5.5" 1:10 Twist 4150 Light HBAR Barrel - Black Nitride Made in the USA 7" Grid Defense Octagon M-Lok Rail Chambered in 9x19 Para Burnt...$409.00 -
Grid Defense 6" .300 Blackout Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 6" .300 Blackout Pistol Upper Receiver - Flat Dark Earth 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...Sale: $329.00MSRP: $399.00