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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Out of stockOn Sale
Grid Defense GX2 7.5" .300 Blackout Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense GX2 7.5" .300 Blackout Flash Can Upper Mil-Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 M4 Barrel - Black Nitride Chambered in .300 Blackout 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled Flash Can Pistol Length Gas System Made in...Sale: $329.00MSRP: $399.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Burnt Bronze
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Burnt Bronze Burnt Bronze 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 -
On Sale
ALWAYS ARMED JESTER 16" 9MM RIFLE KIT - FDE
Sale: $349.00MSRP: $509.00Always Armed Jester 16" 9mm Rifle Kit - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 9mm A2 Flash Hider 15" Jester Free Float M-LOK Hand...Sale: $349.00MSRP: $509.00 -
On Sale
ALWAYS ARMED QUAD MID LENGTH 16" 5.56 NATO RIFLE KIT - FDE
Sale: $409.00MSRP: $639.00ALWAYS ARMED QUAD MIDLENGTH 16" 5.56 NATO RIFLE KIT - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" Mid Length 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid Length Gas...Sale: $409.00MSRP: $639.00 -
On Sale
Ghost 16" 5.56 Mid Length with 11" Rail Rifle Kit - FDE
Sale: $449.00MSRP: $599.00Ghost Firearms 16" 5.56 Mid Length Rifle Kit - FDE Flat Dark Earth (FDE) Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $449.00MSRP: $599.00 -
Out of stock
GHOST FIREARMS 16" 5.56 FRONT SIGHT UPPER WITH BCG/CH - FDE
$449.00GHOST FIREARMS 16" 5.56 FRONT SIGHT UPPER WITH BCG/CH - FDE Made in the USA 16" 5.56 NATO Barrel BCG and Charging Handle Included Magpul FDE Hand Guard A2 Muzzle Device Black Anodized Mil Spec Upper Receiver$449.00 -
On Sale
Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - FDE
Sale: $339.00MSRP: $409.00Grid Defense HEX Stainless Steel 16" .223 Wylde Upper Receiver - FDE Flat Dark Earth 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 -
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 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Burnt Bronze
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Premium AR-15 upper Finished in Burnt Bronze 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...$399.00 -
On Sale
Ghost 18" 350 Legend Rifle Kit - Burnt Bronze
Sale: $449.00MSRP: $519.00Ghost 18" 350 Legend Rifle Kit - Burnt Bronze 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...Sale: $449.00MSRP: $519.00 -
On Sale
Ghost 9" .22LR Pistol Kit - FDE
Sale: $480.00MSRP: $599.00Ghost 9" .22LR Pistol Kit - FDE 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 .22 Long...Sale: $480.00MSRP: $599.00 -
On Sale
GHOST STAINLESS STEEL 16" .223 WYLDE RIFLE KIT - BURNT BRONZE
Sale: $449.00MSRP: $599.00GHOST STAINLESS STEEL 16" .223 Wylde RIFLE KIT - BURNT BRONZE Finished in Burnt Bronze 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 -
On Sale
Ghost Vital 16" Black Upper 5.56 NATO With Burnt Bronze 11" Rail
Sale: $259.00MSRP: $329.00Ghost Vital 16" Black Upper 5.56 NATO With 11" Burnt Bronze Rail - Black Chambered in 5.56 NATO 16" 1:7 Twist 4150 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 11" M-Lok Free Float Hand Guard Finished in Burnt...Sale: $259.00MSRP: $329.00 -
Out of stockOn Sale
Grid Defense 16" .308 Winchester Billet Upper - Burnt Bronze
Sale: $429.00MSRP: $569.00Grid Defense 16" .308 Winchester Billet Upper - Burnt Bronze 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 - BURNT BRONZE
Sale: $349.00MSRP: $419.00Grid Defense 16" .450 Bushmaster Upper Receiver - Burnt Bronze Finished in Burnt Bronze 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 18" 350 Legend Upper Receiver - Burnt Bronze
Sale: $349.00MSRP: $419.00Grid Defense 18" 350 Legend Upper Receiver - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 350 Legend A2 Flash Hider 18" 1:16 Twist 4150 Barrel - Black Nitride Carbine Length Gas System Grid Defense 14" M-Lok Free Float Hand Guard Grid Defense...Sale: $349.00MSRP: $419.00 -
On Sale
Grid Defense 18" 6.5 Creedmoor Billet Upper - FDE
Sale: $389.00MSRP: $579.00Grid Defense 18" 6.5 Creedmoor Billet Upper - FDE 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 Magpul Flat Dark...Sale: $389.00MSRP: $579.00 -
On Sale
Grid Defense 20" 350 Legend Upper Receiver - Burnt Bronze
Sale: $349.00MSRP: $419.00Grid Defense 20" 350 Legend Upper Receiver - Burnt Bronze Burnt Bronze 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 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 -
On Sale
ALWAYS ARMED JESTER 16" 7.62x39 RIFLE KIT - BURNT BRONZE
Sale: $463.00MSRP: $509.00Always Armed Jester 16" 7.62x39 Rifle Kit - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:10 Twist 4150 Barrel with Black Nitride Finish Carbine Length Gas Tube .750 Bore Gas Block Chambered...Sale: $463.00MSRP: $509.00