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.
-
On Sale
Grid Defense 9" .22LR Upper Receiver - Burnt Bronze
Sale: $299.00MSRP: $379.00Grid Defense 9" .22LR Upper Receiver - Burnt Bronze Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Burnt Bronze Cerakote...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense 9" .22LR Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $379.00Grid Defense 9" .22LR Upper Receiver - Tungsten Gray Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 7" Grid Defense Octagon M-Lok Rail Finished in Tungsten Gray...Sale: $299.00MSRP: $379.00 -
Out of stock
GRID DEFENSE GX2 10.5" 5.56 UPPER RECEIVER - BLACK
$379.00Grid Defense GX2 10.5" 5.56 Upper Receiver Hard Coat Black Anodized Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System 9" Grid Defense GX2...$379.00 -
On Sale
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - Blue Titanium Finished in Blue Titanium Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Stainless A2 Muzzle...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - Burnt Bronze
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Stainless A2 Muzzle...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - OD Green
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - OD Green Finished in Magpul OD Green Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Black A2 Muzzle Device Pistol...Sale: $299.00MSRP: $379.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - FDE
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Magpul Flat Dark Earth Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 Blackout (7.62x35) A2 Muzzle Device Pistol Length Gas System 9"...$399.00 -
On Sale
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - OD Green
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Magpul Olive Drab Green Cerakote Finish Chambered in 5.56 NATO Grid Defense Mil Spec 7075 T6 Upper Receiver Grid Defense 9" M-Lok Free Float Hand Guard Carbine Length Gas System 10.5" 1:7...Sale: $299.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Blue Titanium Blue Titanium 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 System...Sale: $329.00MSRP: $429.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - FDE
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Flat Dark Earth FDE 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 System Grid...Sale: $329.00MSRP: $429.00 -
On Sale
Grid Defense Stainless Steel 16" 5.56 Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 556 Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 16" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Carbine Length Gas System Grid Defense 14" M-Lok...Sale: $329.00MSRP: $429.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver Blue Titanium Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 7.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas System Grid...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - FDE
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Pistol Length Gas System Grid Defense 7" M-Lok...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver - OD Green
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Magpul OD Green Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Pistol Length Gas System Grid Defense 7" M-Lok Free Float...Sale: $299.00MSRP: $399.00 -
ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH 12" RAIL, SIGHTS, AND AFG - BLACK
$369.00ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER WITH 12" RAIL, SIGHTS, AND AFG - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 416R Stainless Steel Barrel Chambered in 5.56...$369.00 -
On Sale
ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BURNT BRONZE
Sale: $239.00MSRP: $359.00ALWAYS ARMED 4.5" .22LR TRX SERIES UPPER RECEIVER - BURNT BROZE Chambered in .22LR Finished in Burnt Bronze Cerakote Made In The USA 4.5" 1:16 Twist 4140 CrMo Barrel Salt bath nitride finished barrel 1/2"-28 TPI Medium taper barrel profile 4...Sale: $239.00MSRP: $359.00 -
On Sale
ALWAYS ARMED 4.5" 9MM OCTO GEN 2 FLASH CAN UPPER RECEIVER - TITANIUM
Sale: $219.00MSRP: $299.00ALWAYS ARMED 4.5" 9MM OCTO GEN 2 FLASH CAN UPPER RECEIVER - TITANIUM Made in the USA Mil Spec AR15 Upper Receiver 4.5" 1:10 Twist Barrel with Black Nitride Finish 4.25" Free Float M-LOK Rail Flash Can Muzzle Device Titanium Cerakote FinishSale: $219.00MSRP: $299.00 -
On Sale
Always Armed Gen 1 16" 5.56 Upper Receiver Without Forward Assist
Sale: $189.00MSRP: $319.00Always Armed Gen 1 16" 5.56 Upper Receiver Without Forward Assist Made in the USA Mil-Spec 7075 T6 Upper Receiver No Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750 Low Profile Gas...Sale: $189.00MSRP: $319.00 -
Out of stockOn Sale
ALWAYS ARMED LIGHTWEIGHT SERIES 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL - BLACK
Sale: $219.00MSRP: $319.00ALWAYS ARMED LIGHTWEIGHT SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" Pencil Profile 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid...Sale: $219.00MSRP: $319.00 -
Out of stockOn Sale
ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - TEQUILA SUNRISE
Sale: $219.00MSRP: $319.00ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - TEQUILA SUNRISE Made in the USA Tequila Sunrise Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:7 Twist Barrel...Sale: $219.00MSRP: $319.00