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
Ghost Elite 10.5" 7.62X39 Upper Receiver - Burnt Bronze
Sale: $259.00MSRP: $329.00Ghost Elite 10.5" 7.62x39 Upper - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 7.62x39 7075-T6 Milspec Upper Receiver 10.5" 1:10 Twist 4150 Steel Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System A2 Flash Hider Made...Sale: $259.00MSRP: $329.00 -
Out of stockOn Sale
Ghost Firearms 16" .308 Winchester Billet Upper - Burnt Bronze
Sale: $399.00MSRP: $529.00Ghost Firearms 16" .308 Winchester Billet Upper - Burnt Bronze Billet DPMS Pattern High Profile Upper Receiver 16" 4150 Chrome Moly HBAR Contour Barrel, Mid Length Gas System Chambered in .308 Winchester with a 1:10 Twist Rate 5/8x24 with A2 Flash...Sale: $399.00MSRP: $529.00 -
On Sale
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Burnt Bronze
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Finished in Burnt Bronze Cerakote Ghost Firearms 7.5" Upper Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block...Sale: $449.00MSRP: $599.00 -
On Sale
Ghost Firearms 7.5" 5.56 Flash Can Upper Receiver Pistol Kit - Tungsten Gray
Sale: $449.00MSRP: $599.00Ghost Firearms 7.5" Flash Can Upper Receiver Pistol Build Kit Upper Receiver pistol kit, the new Ghost Firearms AR build kit. Finished in tungsten gray cerakote. Milspec 7075-T6 Upper Receiver 7.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45...Sale: $449.00MSRP: $599.00 -
Out of stockOn Sale
Grid Defense 20" .308 Winchester Billet Upper - Burnt Bronze
Sale: $449.00MSRP: $589.00Grid Defense 20" .308 Upper Receiver - Burnt Bronze 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 Burnt...Sale: $449.00MSRP: $589.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - SNIPER GRAY
Sale: $219.00MSRP: $319.00Always Armed 16" 5.56 NATO Upper Receiver - Sniper Gray 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 Finish Chambered in 5.56 NATO Carbine Length Gas System ...Sale: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - TUNGSTEN GRAY
Sale: $219.00MSRP: $319.00ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - TUNGSTEN GRAY 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 Finish Chambered in 5.56 NATO Carbine Length Gas System .750...Sale: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - MAGPUL FDE
Sale: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout TR Series Upper Receiver - Magpul FDE 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 Chambered in .300 Blackout Pistol...Sale: $209.00MSRP: $299.00 -
Out of stock
Ghost Elite 10.5" 5.56 Nato OD Green w/ Stainless Steel Upgrade & Nickel Boron BCG black charging handle
$449.00Ghost Firearms Elite 10.5" 5.56 Complete Upper - OD Green Made in the USA Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider Upgraded Stainless Steel 416R 10.5" 1:7 Twist M4 Barrel Carbine Length Gas System Ghost Firearms 9"...$449.00 -
On Sale
Ghost Firearms 10.5" 5.56 Flash Can Upper Receiver Pistol Kit - Blue Titanium
Sale: $399.00MSRP: $599.00Ghost Firearms 10.5" Flash Can Upper Receiver Pistol Build Kit Finished in Blue Titanium Cerakote Milspec 7075-T6 Upper Receiver 10.5" 1:7 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO .750 Low Profile Gas Block Carbine Length Gas System...Sale: $399.00MSRP: $599.00 -
On Sale
Ghost Firearms Elite 10.5" 7.62X39 Upper Receiver - BLUE TITANIUM
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 10.5" 7.62x39 Upper - Blue titanium Blue Titanium Cerakote Finish Chambered in 7.62x39 7075-T6 Milspec Upper Receiver 10.5" 1:10 Twist 4150 Steel Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System A2 Flash...Sale: $259.00MSRP: $329.00 -
Out of stockOn Sale
Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Mid Length Upper Receiver - FDE Magpul Flat Dark Earth Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Mid Length Gas System Magpul FDE Complete Upper A2 Flash Hider Mil-Spec...Sale: $329.00MSRP: $399.00 -
Grid Defense Suppressor Ready 10.5" .300 Blackout Upper Receiver
$319.00Grid Defense Suppressor Ready 10.5" .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 9" Free Float Grid Defense Handguard Available in Hard...$319.00 -
On Sale
Ghost Firearms 7.5" 5.56mm with 7" M-Lok Pistol Kit OD Green
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5" Pistol Kit - OD Green OD Green Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-Spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $439.00MSRP: $579.00 -
GRID DEFENSE 10.5" 5.56 STAINLESS STEEL FLASH CAN UPPER RECEIVER WITH RADIAN RAPTOR CHARGING HANDLE & NIB BOLT CARRIER GROUP
$599.00Grid Defense 10.5" 5.56 Stainless Steel Flash Can Upper Receiver With Radian Raptor Charging Handle & NIB Bolt Carrier Group Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 Twist 416R Stainless Steel M4...$599.00 -
On Sale
Grid Defense 16" .22LR Upper Receiver - Black
Sale: $329.00MSRP: $399.00Grid Defense 16" .22LR Upper Receiver - Black 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 Hard Coat Black Anodize A2 Muzzle...Sale: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 10.5" 7.62X39 UPPER RECEIVER - SMITH & WESSON RED
Sale: $209.00MSRP: $299.00Always Armed 10.5" 7.62X39 Upper Receiver - Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered in 7.62X39 Carbine Length Gas...Sale: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 16" 7.62x39 BX SERIES UPPER RECEIVER - BLACK
Sale: $199.00MSRP: $299.00ALWAYS ARMED 16" 7.62x39 BX SERIES UPPER RECEIVER - BLACK 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 7.62x39 Carbine Length Gas System .750...Sale: $199.00MSRP: $299.00 -
On Sale
ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER - BURNT BRONZE
Sale: $219.00MSRP: $319.00ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER 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 Finish Chambered in 5.56 NATO Carbine Length Gas System .750 Low...Sale: $219.00MSRP: $319.00 -
On Sale
Ghost Elite 16" Upper .300 Blackout Don't Tread On Me Dust Cover Charging Handle Combo - FDE
Sale: $319.00MSRP: $369.00Ghost Firearms Elite 16" Upper .300 Blackout - FDE Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 14" M-Lok Free...Sale: $319.00MSRP: $369.00