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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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 System ...$349.00 -
Out of stockOn Sale
Grid Defense GX2 7.5" .300 Blackout Flash Can Upper Receiver - FDE
Sale: $329.00MSRP: $399.00Grid Defense GX2 7.5" .300 Blackout Flash Can Upper Mil-Spec 7075-T6 Upper Receiver 7.5" 1:8 Twist 4150 M4 Barrel - Black Nitride Chambered in .300 Blackout 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled Flash Can Pistol Length Gas System Made in...Sale: $329.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver - Blue Titanium
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver Blue Titanium 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...Sale: $299.00MSRP: $399.00 -
On Sale
Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver - OD Green
Sale: $299.00MSRP: $399.00Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver Magpul Olive Drab Green 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...Sale: $299.00MSRP: $399.00 -
Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver - Tactical Grape
$399.00Grid Defense Stainless Steel 7.5" .300 Blackout Upper Receiver Purple 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 Defense 7"...$399.00 -
On Sale
Ghost Firearms Elite 7.5" Upper 7.62x39 - Blue Titanium
Sale: $259.00MSRP: $329.00Ghost Firearms Elite 7.5" .300 - Blue Titanium Chambered in 7.62x39 7.5" Upper A2 Flash Hider 7.5" 1:10 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost...Sale: $259.00MSRP: $329.00 -
Ghost Firearms 7.5" .300 Blackout FDE Upper Receiver with Burnt Bronze Flash Can
$399.00Ghost Firearms 7.5" FDE UPPER RECEIVER WITH BURNT BRONZE FLASH CAN Finished in Flat Dark Earth Cerakote Milspec 7075-T6 Upper Receiver 7.5" 1:8 4150 M4 Barrel - Black Nitride Chambered in .300 Blackout .750 Low Profile Gas Block Pistol Length Gas System...$399.00 -
On Sale
Grid Defense 7.5" .300 Blackout Upper Receiver - Tactical Grape
Sale: $299.00MSRP: $379.00Grid Defense 7.5" .300 Blackout Upper Receiver Finished in Purple Cerakote 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 Hider Chambered...Sale: $299.00MSRP: $379.00