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
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...$399.00 -
Out of stockOn Sale
Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - OD Green
Sale: $329.00MSRP: $429.00Grid Defense Stainless Steel 16" 300 Blackout Upper Receiver - OD Green OD Green Cerakote Finish Chambered in .300 Blackout (7.62x35) Stainless Steel A2 Flash Hider 16" 1:8 Twist 416R Stainless...Sale: $329.00MSRP: $429.00 -
On Sale
ALWAYS ARMED 16" .300 BLACKOUT TR SERIES UPPER RECEIVER
$179.00 - $199.00Always Armed 16" .300 Blackout TR Series Upper Receiver Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...$179.00 - $199.00 -
Out of stockOn 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...Sale: $299.00MSRP: $379.00 -
Out of stockOn Sale
Grid Defense 16" .300 Blackout Quad Rail Upper Receiver - Tactical Grape
Sale: $329.00MSRP: $399.00Grid Defense 16" 5.56 Quad Rail Upper Receiver - Tactical Grape Tactical Grape Cerakote Finish Chambered in .300 Blackout 14" M-Lok Quad Rail 16" 1:8 4150 Barrel - Black Nitride Pistol Length Gas...Sale: $329.00MSRP: $399.00 -
Out of stockOn 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...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 ...$399.00 -
Out of stockOn Sale
ALWAYS ARMED 10.5" .300 BLACKOUT BR SERIES UPPER RECEIVER
Sale: $169.00MSRP: $279.00Always Armed 10.5" .300 Blackout BR Series Upper Receiver 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...Sale: $169.00MSRP: $279.00 -
On Sale
ALWAYS ARMED 10.5" .300 BLACKOUT GEN 1 UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" .300 Blackout Gen 1 Upper Receiver 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...$169.00 - $189.00 -
On Sale
ALWAYS ARMED 10.5" .300 BLACKOUT JESTER SERIES UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" .300 Blackout Jester Series Upper Receiver 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...$169.00 - $189.00 -
Out of stockOn Sale
ALWAYS ARMED 10.5" .300 BLACKOUT OCTO SERIES UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" .300 Blackout Octo Series Upper Receiver 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...$169.00 - $189.00 -
On Sale
ALWAYS ARMED 10.5" .300 BLACKOUT TR SERIES UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" .300 Blackout TR Series Upper Receiver 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...$169.00 - $189.00 -
Out of stockOn Sale
ALWAYS ARMED 10.5" 7.62x39 BR SERIES UPPER RECEIVER
Sale: $169.00MSRP: $279.00Always Armed 10.5" 7.62x39 BR Series Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride...Sale: $169.00MSRP: $279.00 -
On Sale
ALWAYS ARMED 10.5" 7.62x39 GEN 1 UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" 7.62x39 Gen 1 Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered...$169.00 - $189.00 -
On Sale
ALWAYS ARMED 10.5" 7.62x39 GEN 1 UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" 7.62x39 Gen 1 Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride Finish Chambered...$169.00 - $189.00 -
On Sale
ALWAYS ARMED 10.5" 7.62x39 TR SERIES UPPER RECEIVER
$169.00 - $189.00Always Armed 10.5" 7.62x39 TR Series Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 10.5" 1:10 Twist 4150 Barrel with Black Nitride...$169.00 - $189.00 -
On Sale
ALWAYS ARMED 16" .300 BLACKOUT BR SERIES UPPER RECEIVER
$179.00 - $199.00Always Armed 16" .300 Blackout BR Series Upper Receiver Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...$179.00 - $199.00 -
On Sale
ALWAYS ARMED 16" .300 BLACKOUT GEN 1 UPPER RECEIVER
$179.00 - $199.00Always Armed 16" .300 Blackout GEN 1 Upper Receiver Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...$179.00 - $199.00 -
On Sale
ALWAYS ARMED 16" .300 BLACKOUT JESTER SERIES UPPER RECEIVER
$179.00 - $199.00Always Armed 16" .300 Blackout Jester Series Upper Receiver Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...$179.00 - $199.00 -
On Sale
ALWAYS ARMED 16" .300 BLACKOUT OCTO SERIES UPPER RECEIVER
$179.00 - $199.00Always Armed 16" .300 Blackout OCTO Series Upper Receiver Upper Specifications Mil-Spec Upper Receiver Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 14" Free...$179.00 - $199.00