300BLK Uppers

300BLK Uppers

Enhance your AR-15 with premium 300 Blackout upper receivers from Always Armed. Designed for superior performance in rifle and pistol builds, our 300BLK uppers are ideal for subsonic and suppressed shooting. Choose from a variety of Cerakote finishes, barrel lengths, and configurations to match your tactical or custom build. Easy to install, reliable, and ready for the range or field.

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  • AR 15 | Always Armed 16" 300 Blackout Upper Receiver with 15" M-Lok Rail Mil-Spec 16" .300 AAC Rifle Upper Receiver - Smith & Wesson Red | Pistol Length Gas System
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Smith & Wesson Red 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...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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  • Always Armed 10.5" 300 Blackout 1:8 Twist Upper Receiver AR 15 Mil-spec 10.5" Pistol Upper Receiver Chambered in 7.62x35 - Bazooka Green Finish
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN

    Now: $209.00
    Was: $299.00
    Always 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 Gas...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE OCTO Series AR 15 Pistol Upper | Milspec Dust Cover and Forward Assist
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    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE Made in the USA Magpul FDE Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5" 1:8 Twist Barrel with...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • Always Armed 16" 300 Blackout Upper Receiver 16" .300 Blackout Rifle Upper Receiver - Ridgeway Blue Cerakote Finish
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Ridgeway Blue 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 System ...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • Always Armed 7.5" 300 Blackout AR-15 Upper Receiver Mil-Spec AR 15 7.5" Pistol Upper Receiver with 1:8 Twist 4150 Steel Barrel - Ridgeway Blue
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    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Ridgeway Blue 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...
    Now: $209.00
    Was: $299.00
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    Was: $299.00
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  • Always Armed 7.5" Upper Receiver Chambered in .300 Blackout Mil Spec 7.5" 1:8 Twist .300 Pistol Upper Receiver - Bazooka Green
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    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN

    Now: $209.00
    Was: $299.00
    Always 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 Gas...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - FDE This is the best budget sbr upper. Short enough to fit in a backpack while staying effective
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    ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - FDE

    Now: $229.00
    Was: $339.00
    ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - FDE Finished in FDE Cerakote Milspec 7075-T6 Upper Receiver 6" Black Nitride Barrel 1:7 Twist Rate 5/8x24 TPI Thread Pitch Chambered in .300 Blackout (7.62x35) .750 Low Profile Gas...
    Now: $229.00
    Was: $339.00
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    Now: $229.00
    Was: $339.00
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  • Sig Pink 16" Upper Receiver Chambered in 7.62x35 Always Armed 16" .300 Blackout Upper Receiver with 15" MLOK Rail
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - SIG PINK

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Sig Pink 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 System .750...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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  • 16" .300 Blackout Upper Receiver with Stainless Steel Barrel | AR15
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    Always Armed 16" .300 Blackout Upper Receiver with Stainless Steel Barrel, AXE Brake and 12" M-Lok Rail - Black Anodized

    $349.00
    Always Armed 16" .300 Blackout Upper Receiver Black Anodized Finish Chambered in .300 Blackout 12" Aluminum M-LOK Hand Guard 16" 1:8 416R Stainless Steel Barrel Pistol Length Gas System Stainless Steel AXE Brake Mil-Spec 7075-T6 Upper Receiver
    $349.00
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    $349.00
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  • 16" 1:8 twist barrel ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH 12" RAIL - BLACK
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH 12" RAIL - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH 12" RAIL - BLACK Hard Coat Black Anodized Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist  Pistol Length Gas System 750 Low Profile Gas Block 12" Free Float...
    Now: $199.00
    Was: $269.00
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    Was: $269.00
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  • Milspec AR-15 OD Green Upper Receiver Chambered in .300 Blackout Grid Defense Pistol Upper with 10.5" 1:8 Barrel, 12" M-Lok Rail and Dimpled Flash Can - Magpul Olive Drab Green
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - OD Green

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - OD Green Finished in Magpul Olive Drab Green Cerakote Made in the USA 7075-T6 Mil-Spec 10.5" .300 Blackout Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in ...
    Now: $329.00
    Was: $399.00
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    Was: $399.00
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  • ALWAYS ARMED 6" 300 BLACKOUT UPPER RECEIVER - BLACK This stubby .300 Blackout upper is the way to start your next CQB CQC suppressed build
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    ALWAYS ARMED 6" 300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 6" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  6" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...
    Now: $189.00
    Was: $249.00
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    Was: $249.00
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  • Cerakoted Always Armed 7.5" .300 Blackout Upper Receiver with 7" Rail Mil-Spec AR 15 Upper Receiver Chambered in 7.62x35 - Sig Pink
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    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - SIG PINK

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Sig Pink 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 System ...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • Always Armed Jester 10.5" Upper Receiver 10.5" 1:8 .300 Blackout Barrel
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    ALWAYS ARMED JESTER 10.5" .300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    ALWAYS ARMED JESTER 10.5" .300 BLACKOUT UPPER RECEIVER Chambered in .300 Blackout Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Hard Coat Black Anodized...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT AR15 MIL SPEC UPPER RECEIVER - BURNT BRONZE
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    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE Made in the USA Burnt Bronze Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5" 1:8 Twist...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED TR SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE 10.5" 1:8 twist 4150 steel barrel
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    ALWAYS ARMED TR SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED TR SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - FDE Made in the USA Magpul FDE Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK TR Series Rail 10.5" 1:8 Twist Barrel with...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • Ridgeway Blue AR15 Upper Receiver | .300 Blackout
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE Made in the USA Ridgeway Blue Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:7 Twist Barrel...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 10.5" .300 BX SERIES UPPER RECEIVER
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    ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED

    Now: $189.00
    Was: $249.00
    ALWAYS ARMED 10.5" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • Always Armed 10.5" 300 Blackout Upper Receiver with 10" Hand Guard 10.5" 7.62x35 Pistol Upper Receiver - Sig Pink Cerakote
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - SIG PINK

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Sig Pink 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 Gas...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER
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    ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK 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...
    Now: $199.00
    Was: $269.00
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    Now: $199.00
    Was: $269.00
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