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
Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Tungsten Gray
SALE: $329.00MSRP: $399.00Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver Finished in Tungsten Gray Cerakote Mil-spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride 9" Octagon M-Lok Rail Pistol Length Gas System Dimple Flash...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 Firearms 11" M-Lok Free Float Hand Guard Ghost Mil-Spec...$449.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE
SALE: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 16" Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length...SALE: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED
SALE: $189.00MSRP: $269.00ALWAYS ARMED 7.5" 300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED 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...SALE: $189.00MSRP: $269.00 -
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 Barrel Pistol Length Gas...$299.00 -
Out of stock
16" .300 Blackout Upper Receiver with 15" KeyMod Hand Guard
$299.0016" .300 Blackout Upper Receiver with 15" KeyMod Hand Guard Made in the USA 16" 4150 Barrel Chambered in .300 Blackout 15" Free Floating Key Mod Hand Guard Black Anodized Finish Pistol Length Gas System A2 Muzzle Device$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 Light HBar Barrel - Black Nitride Dimpled Flash...SALE: $329.00MSRP: $399.00 -
On Sale
Ghost Firearms Elite 7.5" Upper .300 Blackout Burnt Bronze
SALE: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" .300 Upper - Burnt Bronze Burnt Bronze Cerakote Finished Chambered in .300 Blackout (7.62x35) A2 Flash Hider 7.5" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas...SALE: $259.00MSRP: $329.00 -
Out of stock
Ghost Firearms Stainless Steel 16" Upper .300 Blackout - Black Anodized
$329.00Ghost Stainless Steel 16" 300 Blackout Upper Receiver - Black Anodized Hard-Coat Black Anodized 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...$329.00 -
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 Chambered in .300 Blackout Pistol Length Gas...SALE: $219.00MSRP: $319.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN
SALE: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Bazooka Green 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 Chambered in .300 Blackout Pistol Length Gas...SALE: $219.00MSRP: $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 Blackout (7.62x35) A2 Muzzle Device Pistol...SALE: $299.00MSRP: $379.00 -
On Sale
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED
SALE: $209.00MSRP: $299.00Always Armed 10.5" 300 Blackout Upper Receiver - Smith & Wesson Red 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 Chambered in .300...SALE: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED
SALE: $219.00MSRP: $319.00Always Armed 16" 300 Blackout Upper Receiver - Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Blackout Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300...SALE: $219.00MSRP: $319.00 -
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 Chambered in .300 Blackout Pistol Length...SALE: $209.00MSRP: $299.00 -
On Sale
ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE
SALE: $209.00MSRP: $299.00Always Armed 7.5" 300 Blackout 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 Length Gas...SALE: $209.00MSRP: $299.00 -
On Sale
GRID DEFENSE 16" .300 BLACKOUT UPPER RECEIVER - BLACK
SALE: $329.00MSRP: $399.00Grid Defense 16" .300 Blackout Upper Receiver - Black Hard Coat Black Anodized Chambered in 300 Blackout (7.62x35) 14" M-Lok Rail 16" 1:8 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper...SALE: $329.00MSRP: $399.00 -
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 Chambered in .300 Blackout Pistol Length Gas...SALE: $209.00MSRP: $299.00 -
On Sale
Grid Defense 16" 300 Blackout Upper Receiver - OD Green
SALE: $329.00MSRP: $399.00Grid Defense 16" 300 Blackout Upper Receiver - OD Green OD Green Cerakote Finish Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Pistol Length Gas System Grid Defense 14" M-Lok Free Float...SALE: $329.00MSRP: $399.00 -
On Sale
ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN
SALE: $209.00MSRP: $299.00Always Armed 10.5" 300 Blackout Upper Receiver - Bazooka Green 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 Chambered in .300 Blackout Pistol Length...SALE: $209.00MSRP: $299.00