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
Ghost Firearms 7.5" 5.56 Stainless Steel Flash Can Upper Receiver - Black
Sale: $289.00MSRP: $349.00GHOST FIREARMS 7.5" 5.56 STAINLESS STEEL FLASH CAN UPPER RECEIVER Proudly Made in the USA 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver 7.5" 1:7 Twist 416R Stainless Steel Barrel Pistol Length Gas System .750 Low Profile Gas Block Flash Can...Sale: $289.00MSRP: $349.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Blue Titanium
$349.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver Blue Titanium Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas System ...$349.00 -
Ghost Firearms IHS 4.5" 9mm Blast Can Upper
$249.00 - $269.00Ghost Firearms IHS 4.5" Blast Can Upper 9MM Chambered in 9x19MM Para Stubby Blast Can Muzzle Device 4.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride 1/2x36 Thread Pattern Ghost Firearms 4.25" M-Lok Free Float Handguard IHS...$249.00 - $269.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Blue Titanium Blue Titanium Cerakote Finish Chambered in .300 Blackout 14" M-Lok Quad Rail 16" 1:8 4150 Barrel - Black Nitride Pistol Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" 9mm Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $399.00Grid Defense 16" 9mm Upper Receiver - Tactical Grape Finished in Purple Cerakote Milspec 7075-T6 Upper Receiver 1/2x36 Thread Pattern 16" 1:10 Twist 4150 Light HBar Barrel - Black Nitride 14" Grid Defense Octagon M-Lok Rail A2 Muzzle Device Chambered in...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 18" 6mm ARC Upper Receiver - Tungsten Gray
Sale: $329.00MSRP: $419.00Grid Defense 18" 6mm ARC Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Chambered in 6mm ARC 14" Free Float M-Lok Rail 18" 4150 Heavy Profile Barrel - Black Nitride 1:8 Twist Rate .750 Mid Length Gas System 5/8x24 Thread...Sale: $329.00MSRP: $419.00 -
On Sale
Grid Defense 9" .22LR Flash Can Upper Receiver - Blue Titanium
Sale: $329.00MSRP: $399.00Grid Defense 9" .22LR Flash Can Upper Receiver - Blue Titanium Milspec 7075-T6 Upper Receiver 9" 4150 Black Nitride Barrel Pencil Lightweight Profile Barrel 1:16 Twist Rate 1/2x28 Thread Pattern 9" Grid Defense Octagon M-Lok Rail Blue Titanium Cerakote...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense 9" .22LR Upper Receiver - Black
Sale: $299.00MSRP: $379.00Grid Defense 9" .22LR Upper Receiver - Black 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 Hard Coat Black Anodize A2...Sale: $299.00MSRP: $379.00 -
On Sale
Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver - Tungsten Gray
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 10.5" 5.56 Upper Receiver High quality AR15 upper receivers Tungsten Gray Cerakote Finish Stainless Steel AR 15 Upper Receiver Chambered in 5.56 NATO Grid Defense Mil Spec 7075 T6 Upper Receiver Grid Defense 9" M-Lok...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - OD Green
Sale: $329.00MSRP: $399.00Grid Defense Stainless Steel 16" .223 Wylde Upper Receiver - OD Green Magpul OD Green 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 -
On Sale
ALWAYS ARMED 7.5" 5.56 NATO COMPLETE STAINLESS STEEL UPPER RECEIVER WITH BCG/CH/ENHANCED FLASH HIDER - BLACK ANODIZED
Sale: $269.00MSRP: $469.00ALWAYS ARMED 7.5" 5.56 NATO COMPLETE STAINLESS STEEL UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 416R Stainless Steel Barrel Chambered in 5.56 NATO Pistol...Sale: $269.00MSRP: $469.00 -
On Sale
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 -
ALWAYS ARMED COMPLETE 10.5" 5.56 STAINLESS STEEL FLASH CAN UPPER RECEIVER WITH 12"MLOK RAIL, BCG, CHARGING HANDLE & SIGHTS
$399.00ALWAYS ARMED COMPLETE 10.5" 9MM FLASH CAN UPPER RECEIVER WITH 12" RAIL - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:7 Twist 416R Stainless Steel Barrel Chambered in 5.56 NATO...$399.00 -
Out of stock
ALWAYS ARMED COMPLETE 16" 5.56 NATO STAINLESS STEEL FLUTED UPPER RECEIVER WITH 10" KEYMOD RAIL, BCG, CHARGING HANDLE & SIGHTS
$369.99ALWAYS ARMED COMPLETE 16" 5.56 NATO STAINLESS STEEL FLUTED UPPER RECEIVER WITH 10" KEYMOD RAIL, BCG, CHARGING HANDLE & SIGHTS Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 416R Stainless Steel...$369.99 -
On Sale
BLEM ALWAYS ARMED OCT2 SERIES 16" 9MM UPPER RECEIVER - BLACK
Sale: $169.00MSRP: $269.00BLEMISHED ALWAYS ARMED OCT2 SERIES 16" 9MM 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 9mm A2 Flash Hider 15"...Sale: $169.00MSRP: $269.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - FDE
$349.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver Magpul Flat Dark Earth Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas...$349.00 -
On Sale
Ghost 10.5" American Flag Engraved Upper 5.56 Pistol Kit - Black
Sale: $419.00MSRP: $494.00Ghost 10.5" American Flag Engraved Upper 5.56 Pistol Kit - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 9" M-Lok Free...Sale: $419.00MSRP: $494.00 -
Out of stockOn Sale
GHOST 16" 5.56 NATO UPPER RECEIVER - PERIWINKLE
Sale: $269.00MSRP: $349.00GHOST FIREARMS ELITE 16" 5.56 UPPER RECEIVER Periwinkle Cerakote Finished Ghost Elite 16 Upper Chambered in 5.56x45 NATO (5.56/.223) A2 Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost...Sale: $269.00MSRP: $349.00 -
On Sale
Ghost 18" .308 Winchester Billet Rifle Kit - Tungsten Gray
Sale: $609.00MSRP: $739.00Ghost 18" .308 Winchester Billet Rifle Kit - Tungsten Gray Billet DPMS Pattern High Profile Upper 18" 4150 Chrome Moly HBAR Contour Barrel Rifle Gas System Chambered in .308 Winchester 1:10 Twist Rate 5/8x24 TPI Thread Pitch A2 Flash Hider 15" M-LOK...Sale: $609.00MSRP: $739.00 -
On Sale
Ghost 9" .22LR Pistol Kit - Black
Sale: $460.00MSRP: $579.00Ghost 9" .22LR Pistol Kit - Black 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...Sale: $460.00MSRP: $579.00