300 Blackout Uppers

300 Blackout 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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  • Always Armed 10.5" 300 Blackout Upper Receiver - Black Milspec AR-15 10.5" Always Armed Upper with 1:8 Twist
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    ALWAYS ARMED OCTO SERIES 10.5" 300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK ANODIZED

    Now: $189.00
    Was: $279.00
    ALWAYS ARMED OCTO SERIES 10.5" 300 BLACKOUT FLASH CAN 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...
    Now: $189.00
    Was: $279.00
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    Was: $279.00
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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...
    Now: $229.00
    Was: $339.00
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    Was: $339.00
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  • Always Armed 5" .300 Blackout Octo IHS Upper Receiver Always Armed 5" .300 Blackout Octo IHS Upper Receiver
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    Always Armed 5" .300 Blackout Octo IHS Upper Receiver

    $219.00 - $239.00
    Always Armed 5" .300 Octo IHS Upper Receiver Chambered in .300 Blackout 4150 salt bath nitride barrel 5/8x24 TPI thread pitch 1:5 twist rate Micro length gas system Mil-Spec upper...
    $219.00 - $239.00
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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...
    Now: $199.00
    Was: $269.00
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    Was: $269.00
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  • ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK Shop this short upper for your next sbr build
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    ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK

    Now: $209.00
    Was: $319.00
    ALWAYS ARMED 6" .300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK Hard Coat Black Anodized Finish Milspec 7075-T6 Upper Receiver 6" Black Nitride Barrel 1:7 Twist Rate 5/8x24 TPI Thread...
    Now: $209.00
    Was: $319.00
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    ALWAYS ARMED 10.5" STAINLESS STEEL .300 BLACKOUT UPPER RECEIVER - TITANIUM ALWAYS ARMED 10.5" STAINLESS STEEL .300 BLACKOUT UPPER RECEIVER - TITANIUM
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    ALWAYS ARMED 10.5" STAINLESS STEEL .300 BLACKOUT UPPER RECEIVER - TITANIUM

    Now: $209.00
    Was: $319.00
    ALWAYS ARMED 10.5" STAINLESS STEEL .300 BLACKOUT UPPER RECEIVER - TITANIUM Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 416R Stainless Steel...
    Now: $209.00
    Was: $319.00
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    Now: $209.00
    Was: $319.00
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  • Always Armed 5-inch .300 Blackout Gen 1 IHS Upper Receiver featuring a 4.25-inch free-float handguard with integrated hand stop, Black Nitride barrel, and A2 flash hider.
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    ALWAYS ARMED 5" .300 BLACKOUT GEN 1 IHS UPPER RECEIVER

    $199.00 - $219.00
    Build the ultimate ultra-compact PDW (Personal Defense Weapon) with the Always Armed 5" .300 Blackout Gen 1 IHS Upper Receiver. Designed for extreme maneuverability and maximum suppressor-ready...
    $199.00 - $219.00
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    $199.00 - $219.00
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  • ALWAYS ARMED JESTER 7.5" FLASH CAN UPPER RECEIVER 7.5" .300 BLACKOUT 1:8 TWIST BARREL
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    ALWAYS ARMED JESTER 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK

    Now: $209.00
    Was: $309.00
    ALWAYS ARMED JESTER 7.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER WITH 9" MLOK RAIL - BLACK Mil-Spec AR15 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black...
    Now: $209.00
    Was: $309.00
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    Now: $209.00
    Was: $309.00
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  • ALWAYS ARMED OCT2 SERIES 16" .300 BLACKOUT UPPER RECEIVER - BLACK Mil Spec AR15 Rifle Upper Receiver with M-LOK Free Float Rail
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    ALWAYS ARMED OCT2 SERIES 16" .300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $219.00
    Was: $269.00
    ALWAYS ARMED OCT2 SERIES 16" .300 BLACKOUT 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...
    Now: $219.00
    Was: $269.00
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    Now: $219.00
    Was: $269.00
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  • Always Armed 10.5" .300 Blackout Gen 1 Upper Receiver featuring a 10-inch free-float M-LOK handguard, Black Nitride finished barrel, low-profile gas block, and A2 flash hider.
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    ALWAYS ARMED 10.5" .300 BLACKOUT GEN 1 UPPER RECEIVER

    $169.00 - $189.00
    Always 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
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  • Always Armed 10.5" .300 Blackout TR Series Upper Receiver in black finish, featuring a 10-inch M-LOK handguard, A2 flash hider, and low-profile gas block.
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    ALWAYS ARMED 10.5" .300 BLACKOUT TR SERIES UPPER RECEIVER

    $169.00 - $189.00
    Always 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
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    $169.00 - $189.00
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  • Always Armed 10.5-inch 7.62x39 TR Series Upper Receiver with 10-inch TR Series M-LOK handguard and Black Nitride finish.
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    ALWAYS ARMED 10.5" 7.62x39 TR SERIES UPPER RECEIVER

    $169.00 - $189.00
    Always 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
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  • Always Armed 7.5-inch .300 Blackout BR Series Upper Receiver featuring a 7-inch free-float M-LOK handguard, Black Nitride finished barrel, low-profile gas block, and A2 flash hider.
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    ALWAYS ARMED 7.5" .300 BLACKOUT BR SERIES UPPER RECEIVER

    Now: $169.00
    Was: $289.00
    Always Armed 7.5" .300 Blackout BR Series Upper Receiver 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...
    Now: $169.00
    Was: $289.00
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    Now: $169.00
    Was: $289.00
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  • Always Armed 7.5-inch .300 Blackout Gen 1 Upper Receiver featuring a 7-inch free-float M-LOK handguard, Black Nitride finished barrel, low-profile gas block, and A2 flash hider.
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    ALWAYS ARMED 7.5" .300 BLACKOUT GEN 1 UPPER RECEIVER

    $169.00 - $189.00
    Always Armed 7.5" .300 Blackout Gen 1 Upper Receiver 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...
    $169.00 - $189.00
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  • Out of stock
    16" .300 Blackout Upper Receiver with 15" KeyMod Hand Guard 16" .300 Blackout Upper Receiver with 15" KeyMod Hand Guard
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    16" .300 Blackout Upper Receiver with 15" KeyMod Hand Guard

    $299.00
    16" .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...
    $299.00
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    $299.00
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    Out of stock
  • 7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard 7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard
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    7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard

    $299.00
    7.5" .300 Blackout Flash Can Upper Receiver With 10" MLOK Hand Guard  Made in the USA Mil Spec 7075 T6 Upper Receiver 7.5" 4150 Steel Barrel with Black Nitride Finish Chambered in .300...
    $299.00
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    $299.00
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  • Out of stock
    Always Armed 10.5" .300 Blackout BR Series Upper Receiver featuring a 10-inch free-float M-LOK handguard, Black Nitride finished barrel, low-profile gas block, and A2 flash hider.
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    ALWAYS ARMED 10.5" .300 BLACKOUT BR SERIES UPPER RECEIVER

    Now: $169.00
    Was: $279.00
    Always 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...
    Now: $169.00
    Was: $279.00
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    Now: $169.00
    Was: $279.00
    Subtotal:
    Out of stock
  • Always Armed 10.5" .300 Blackout Jester Series Upper Receiver in black finish, featuring a 9-inch Jester M-LOK handguard, A2 flash hider, and low-profile gas block.
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    ALWAYS ARMED 10.5" .300 BLACKOUT JESTER SERIES UPPER RECEIVER

    $169.00 - $189.00
    Always 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
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  • Out of stock
    Always Armed 10.5" .300 Blackout Octo Series Upper Receiver in black anodized finish, featuring a 9.25-inch Octo M-LOK handguard, A2 flash hider, and low-profile gas block.
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    ALWAYS ARMED 10.5" .300 BLACKOUT OCTO SERIES UPPER RECEIVER

    $169.00 - $189.00
    Always 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
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    $169.00 - $189.00
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    Out of stock
  • Out of stock
    Always Armed 10.5 inch 300 Blackout black upper receiver with FDE KeyMod handguard and A2 flash hider. 10 inch TR Series free-float KeyMod handguard in FDE Cerakote on an Always Armed 300 BLK upper.
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    ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL

    Now: $199.00
    Was: $299.00
    ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist Upper Finished in Hard Coat Black...
    Now: $199.00
    Was: $299.00
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    Qty in Cart: 0
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    Now: $199.00
    Was: $299.00
    Subtotal:
    Out of stock
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