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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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 -
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - 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 Black A2 Muzzle Device Pistol...Sale: $299.00MSRP: $379.00 -
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Tactical Grape
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Purple Cerakote 10.5" Upper Receiver 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...$399.00 -
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - Tactical Grape
$399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver Purple 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 Twist 416R Stainless...$399.00 -
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 -
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Tactical Grape
$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...$429.00 -
Aero Precision 16" 9mm Upper Receiver - Black
$489.99Aero Precision 16" 9mm Upper Receiver - Black EPC-9 Upper Receiver Chambered in 9mm 1:10 Twist Barrel 15" ATLAS S-ONE Handguard 16" CMV Barrel Product comes assembled This complete upper receiver does not include BCG or Charging Handle$489.99 -
ALWAYS ARMED 7.5" 7.62x39 TR SERIES WITH TRINITY FORCE SIGHTS PISTOL KIT - FDE
Sale: $399.00MSRP: $519.98Always Armed 7.5" 7.62x39 TR Series with Trinity Force Sights Pistol Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62x39 Pistol...Sale: $399.00MSRP: $519.98 -
Andro Corp 5" .300 Blackout Upper Receiver - Black
Sale: $350.00MSRP: $415.00Andro Corp 5" .300 Blackout Upper Receiver - Black 4150 CMV Melonite 1:7 Twist M4 Feed Ramps Micro Length Gas System .750 Low Profile Gas Block QPQ Corrosion Resistant Finish A2 Flash Hider 5/8x24 Thread Pitch M-LOK Hand Guard 7075 T6...Sale: $350.00MSRP: $415.00 -
Grid Defense 16" .308 Winchester Billet Upper - OD Green
Sale: $429.00MSRP: $569.00Grid Defense 16" .308 Winchester Billet Upper - OD Green 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"...Sale: $429.00MSRP: $569.00 -
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 -
Grid Defense 20" .308 Winchester Billet Upper - OD Green
Sale: $449.00MSRP: $589.00Grid Defense 20" .308 Upper Receiver - OD Green 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 OD Green...Sale: $449.00MSRP: $589.00 -
Grid Defense 7.5" 7.62x39 Upper Receiver - Black
Sale: $299.00MSRP: $379.00Grid Defense 7.5" 7.62x39 Upper Receiver - Black Anodized Made in The USA Hard Coat Black Anodized Finish Mil Spec 7075-T6 Upper Receiver 7.5" 1:10 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas...Sale: $299.00MSRP: $379.00 -
Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - Blue Titanium Blue Titanium 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...Sale: $329.00MSRP: $399.00 -
Ghost 18" 350 Legend Rifle Kit - FDE
Sale: $449.00MSRP: $519.00Ghost 18" 350 Legend Rifle Kit - FDE 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 Gas...Sale: $449.00MSRP: $519.00 -
Ghost 9" .22LR Pistol Kit - Burnt Bronze
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in...Sale: $480.00MSRP: $599.00 -
Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense Stainless Steel 10.5" .223 Wylde Upper Receiver - FDE Finished in Flat Dark Earth Cerakote Chambered in .223 Wylde 10.5" 416R Stainless Steel Barrel 1:7 Twist Rate 1/2x28 TPI Thread Pitch Stainless A2 Muzzle Device Pistol...Sale: $299.00MSRP: $379.00 -
Aero Precision 16" 5.56 NATO Upper Receiver - FDE
$534.99Aero Precision 16" 5.56 NATO Upper Receiver - FDE M4E1 Threaded Assembled Upper Receiver ATLAS S-ONE M-LOK Handguard of choice 16" 5.56 CMV Barrel Low Profile Gas Block and Mid-Length Gas Tube Product comes assembled This complete upper does not...$534.99 -
Ghost 16" .22LR Rifle Kit - OD Green
Sale: $499.00MSRP: $619.00Ghost 16" .22LR Rifle Kit - OD Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 4150 Black Nitride Barrel Lightweight Pencil Profile Barrel 1:16 Twist Rate 1/2x28 TPI Thread Pitch Chambered in .22 Long...Sale: $499.00MSRP: $619.00 -
Ghost IHS 5" Upper 5.56 Nato - Burnt Bronze
Sale: $259.00MSRP: $329.00Ghost IHS 5" 5.56 Upper - Burnt Bronze Finished in Burnt Bronze Cerakote Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 5" 1:5 Twist 4150 Chrome Moly Vanadium Barrel 1/2x28 Thread Pitch Micro Length Gas System Ghost 4.25"...Sale: $259.00MSRP: $329.00