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.
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On Sale
GHOST ELITE 10.5" UPPER .300 BLACKOUT WITH AXE BRAKE - ZOMBIE GREEN
Sale: $329.00MSRP: $378.99GHOST ELITE 10.5" UPPER .300 BLACKOUT WITH AXE BRAKE - ZOMBIE GREEN Zombie Green Cerakote Finished Chambered in .300 Blackout Ghost Firearms AXE Brake 10.5" 1:8 Twist 4150 Black Nitride Barrel Pistol Length Gas System Ghost Firearms 9"...Sale: $329.00MSRP: $378.99 -
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 System ...$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 -
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 Nitride...$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 Gas...$349.00 -
Always Armed 10.5" .300 Blackout Upper Receiver - Tungsten Gray | POW MIA
$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...$334.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - OD Green
$349.00Ghost Firearms Elite 10.5" .300 Stainless Steel Upper Receiver Magpul Olive Drab Green 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
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 Receiver 10.5"...$399.00 -
On 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 System Ghost...Sale: $259.00MSRP: $329.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - FDE
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Magpul Flat Dark Earth 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 System 9"...$399.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Burnt Bronze
$349.00Ghost Firearms Elite 10.5".300 Stainless Steel Upper Receiver - Burnt Bronze Burnt Bronze 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
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 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Tungsten Gray
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Tungsten Gray 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 System 9" Grid Defense...$399.00 -
On Sale
Grid Defense 10.5" .300 Blackout Upper Receiver - Tactical Grape
Sale: $299.00MSRP: $379.00Grid Defense 10.5" .300 Blackout Upper Receiver - Tactical Grape Finished in Purple Cerakote Mil-Spec 7075-T6 Upper Receiver 10.5" 1:8 Twist 4150 Steel Barrel - Black Nitride Chambered in .300 Blackout (7.62x35) A2 Muzzle Device Pistol Length Gas System...Sale: $299.00MSRP: $379.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - OD Green
$399.00Grid Defense 10.5" .300 Blackout Stainless Steel Upper Receiver Finished in Magpul Olive Drab Green 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...$399.00 -
Out of stock
Ghost Firearms Elite Stainless Steel 10.5" Upper .300 Blackout - Tactical Grape
$349.00Ghost Firearms Elite 10.5.300 Stainless Steel Upper Receiver High quality AR15 upper, the new 7075 upper receiver from Ghost Firearms. Finished in purple cerakote.Chambered in .300 Blackout (7.62x35) A2 Flash Hider 10.5" 1:8 Twist 416R Stainless...$349.00 -
Out of stock
Grid Defense Stainless Steel 10.5" .300 Blackout Upper Receiver - Tactical Grape
$399.00Grid Defense 10.5" .300 Blackout Upper Receiver Finished in Purple Cerakote 10.5" Upper Receiver 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 System...$399.00