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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On Sale
Always Armed 7.5" 7.62x39 Upper Receiver
Sale: $189.00MSRP: $249.00Always Armed 7.5" 7.62x39 Upper Receiver Chambered in 7.62x39 A2 Birdcage Flash Hider 7.5" 1:10 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System 7" M-Lok Free Float Hand Guard Mil-Spec...Sale: $189.00MSRP: $249.00 -
Out of stockOn Sale
ALWAYS ARMED 7.5" STAINLESS STEEL 9MM KEYMOD UPPER RECEIVER - BLACK
Sale: $159.00MSRP: $299.00ALWAYS ARMED 7.5" STAINLESS STEEL 9MM KEYMOD UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver 7" Keymod Hand Guard 7.5" 1:10 Twist 416R Stainless Steel Barrel Chambered...Sale: $159.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 16" UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT
Sale: $315.00MSRP: $558.00Always Armed 16" 5.56 NATO Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:7 Twist 4150 Barrel with Black Nitride...Sale: $315.00MSRP: $558.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - TITANIUM
Sale: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish...Sale: $219.00MSRP: $319.00 -
Out of stockOn Sale
Ghost 20" .308 Winchester Billet Upper - Black
Sale: $389.00MSRP: $529.00Ghost AR10 20" 308 Upper Receiver - Black Anodized DPMS Pattern upper 20" 4150 Chrome Moly HBAR Contour Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 Thread Pattern A2...Sale: $389.00MSRP: $529.00 -
On Sale
Ghost Firearms Elite 16" Upper 7.62X39 - BLACK ANODIZED
Sale: $249.00MSRP: $319.00GHOST FIREARMS ELITE 16" UPPER RECEIVER | BLACK ANODIZED 7.62X39 UPPER Chambered in 7.62x39 A2 Flash Hider 5/8x24 barrel thread pitch 16" 1:10 Twist 4150 Light HBar Barrel Black...Sale: $249.00MSRP: $319.00 -
On Sale
Grid Defense 10.5" .300 Blackout Upper Receiver - FDE
Sale: $299.00MSRP: $379.00Grid Defense 10.5" .300 Blackout Upper Receiver - FDE Finished in Magpul Flat Dark Earth Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 4150 Steel Barrel - Black Nitride Chambered in .300...Sale: $299.00MSRP: $379.00 -
Out of stockOn Sale
ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED
Sale: $189.00MSRP: $279.00ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish...Sale: $189.00MSRP: $279.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - TITANIUM
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish...Sale: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout Upper Receiver - Bazooka Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish...Sale: $209.00MSRP: $299.00 -
On Sale
Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 7.5" .300 Blackout Upper Receiver - Blue Titanium Finished in Blue Titanium Cerakote Made in the USA Mil-spec 7075-T6 Upper Receiver Chambered in .300 Blackout (7.62x35) 1:8 Twist 4150...Sale: $329.00MSRP: $399.00 -
Out of stock
Ghost Vital 16" Upper .300 Blackout with BCG/Charging Handle, AXE Brake and Sights
$449.00Ghost Firearms Vital 16" Upper Chambered in .300 Blackout (7.62x35) AXE Brake 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Fire$449.00 -
On Sale
Ghost Elite 16" Upper 7.62x39 - FDE
Sale: $269.00MSRP: $349.00Ghost Elite 16" Upper - FLAT DARK EARTH Chambered in 7.62x39 A2 Flash Hider 16" 1:10 Twist 4150 Light HBar Barrel Black Nitride Carbine Length Gas System&nbsSale: $269.00MSRP: $349.00 -
On Sale
Ghost Firearms 10.5" .300 Blackout Flash Can Upper Receiver Pistol Kit - Black Anodized
Sale: $449.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 10.5" 1:8 4150 Light HBAR Barrel - Black Nitride Chambered in .300...Sale: $449.00MSRP: $599.00 -
On Sale
7.5" 5.56mm with 7" M-Lok Pistol Kit Blue Titanium
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5" 5.56 Pistol Kit - Blue Titanium Blue Titanium Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging HandlSale: $439.00MSRP: $579.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE
Sale: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Ridgeway Blue Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish...Sale: $219.00MSRP: $319.00 -
Out of stock
Ghost Vital Stainless Steel 10.5" Upper .300 Blackout - Black Anodized
$299.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver Hard Coat Black Anodized Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar...$299.00 -
Out of stockOn Sale
ALWAYS ARMED 4.5" 9MM TR SERIES UPPER RECEIVER - BLACK
Sale: $179.00MSRP: $269.00ALWAYS ARMED 4.5" 9MM TR SERIES UPPER RECEIVER - BLACK Made in the USA Mil Spec AR15 Upper Receiver 4.5" 1:10 Twist Barrel with Black Nitride Finish 4" TR Series Free Float M-LOK Handguard A2...Sale: $179.00MSRP: $269.00 -
Out of stockOn Sale
Ghost 20" .308 Winchester Billet Upper - Flat Dark Earth
Sale: $419.00MSRP: $549.00Ghost AR10 20" 308 Upper Receiver - Flat Dark Earth Billet DPMS Pattern High Profile Upper Receiver 20" 4150 Chrome Moly HBAR Contour Barrel Rifle Length Gas System Chambered in .308 Winchester 1:10...Sale: $419.00MSRP: $549.00 -
Ghost Suppressor Ready IHS 5" .300 Blackout Upper Receiver
$259.00 - $279.00Ghost Suppressor Ready IHS 5.5" .300 Blackout Upper Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 4.25"...$259.00 - $279.00