300 Blackout Uppers
Our custom-built 300 Blackout uppers and accessories are designed to deliver superior performance and reliability. Our selection of 300 Blackout upper receivers and barrel assemblies are crafted from top-quality materials and built to the highest standards to ensure that you can build the ultimate firearm.
-
Out of stock
Ghost Elite Stainless Steel 16" Upper .300 Blackout - Burnt Bronze
$379.00Ghost Elite 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...$379.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - BLACK ANODIZED
SALE: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Hard Coat Black Anodized Finish Mil Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 Light HBAR Barrel - Black Nitride 7" Grid Defense Octagon M-Lok Rail Pistol Length Gas System A2 Flash...SALE: $299.00MSRP: $379.00 -
Out of stockOn Sale
Ghost Firearms Elite 7.5" UPPER 300 BLACKOUT - TACTICAL GRAPE
SALE: $259.00MSRP: $329.00Ghost Firearms Elite 7.5".300 Upper - Tactical Grape Tactical Grape Cerakote Finished Chambered in 300 BLACKOUT (7.62X35) A2 Flash Hider 7.5" 1:8 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost...SALE: $259.00MSRP: $329.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Tungsten Gray
$349.00Ghost Firearms Elite 10.5" .300 Stainless Steel Upper Receiver Tungsten Gray 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 -
Out of stock
Ghost Firearms Elite Stainless Steel 16" Upper .300 AAC Blackout - Tungsten Gray
$379.00Ghost Firearms Elite Stainless Steel 16" 300 Blackout Upper - Tungsten Gray Tungsten Gray 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...$379.00 -
Out of stock
Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver - Tungsten Gray
$399.00Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver Tungsten Gray Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 7.5" 1:8 Twist 416R Stainless Steel Light HBar Barrel Pistol Length Gas System Grid...$399.00 -
On Sale
ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE
SALE: $209.00MSRP: $299.00ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE Made in the USA Burnt Bronze Cerakote Finish Mil-Spec AR15 7075 T6 .300 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5"...SALE: $209.00MSRP: $299.00 -
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...$349.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Blue Titanium
SALE: $349.00MSRP: $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...SALE: $349.00MSRP: $399.00 -
Out of stock
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH 9.25" RAIL, ADJUSTABLE GAS BLOCK AND ENHANCED SS MUZZLE DEVICE - BLACK ANODIZED
$309.99ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH 9.25" RAIL, ADJUSTABLE GAS BLOCK AND ENHANCED SS MUZZLE DEVICE 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...$309.99 -
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...$349.00 -
Out of stock
ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLACK
$349.00ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 BLACKOUT Pistol Length Gas...$349.00 -
On Sale
Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Zombie Green
SALE: $329.00MSRP: $399.00GRID DEFENSE 10.5" UPPER - .300 BLACKOUT UPPER RECEIVER WITH FLASH CAN - ZOMBIE GREEN Finished in Zombie Green Cerakote Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300...SALE: $329.00MSRP: $399.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Black
SALE: $349.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Black Black Anodized Finish Chambered in .300 Blackout A2 Flash Hider 16" 1:8 Twist 4150 Barrel - Black Nitride Pistol Length Gas System Grid Defense 14" M-Lok Free Float Quad Rail Grid...SALE: $349.00MSRP: $399.00 -
On Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tungsten Gray
SALE: $349.00MSRP: $399.00Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tungsten Gray Tungsten Gray 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...SALE: $349.00MSRP: $399.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Blue Titanium
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver The premium quality Mil-Spec uppers at best online prices, the new .300 blackout upper receiver, a premium product by Grid Defense. Finished in Blue Titanium Cerakote Mil-Spec 7075-T6 Upper...$399.00 -
Out of stock
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Tungsten Gray
$429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - Tungsten Gray Tungsten Gray 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 -
Out of stockOn Sale
Always Armed 10.5" .300 Blackout Upper Receiver - Tungsten Gray | POW MIA
SALE: $299.00MSRP: $334.00Always Armed 10.5" .300 Blackout Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with POW MIA Dust Cover and Forward Assist 10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...SALE: $299.00MSRP: $334.00 -
Out of stockOn Sale
ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL AND AXE BRAKE - BLACK
SALE: $299.00MSRP: $359.00ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER Made in the USA Hard Coat Black Anodized Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:8 Twist 416R Stainless...SALE: $299.00MSRP: $359.00 -
Out of stockOn Sale
Ghost Fireams Elite 10.5" UPPER .300 BLACKOUT - TACTICAL GRAPE
SALE: $259.00MSRP: $329.00Ghost Firearms Elite 10.5".300 Upper - Tactical Grape Tactical Grape Cerakote Finished Chambered in 300 BLACKOUT (7.62X35) A2 Flash Hider 10.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas...SALE: $259.00MSRP: $329.00