300BLK Uppers

300BLK Uppers

300Blk uppers for AR15 in a wide range of Cerakote colors like FDE and OD Green are available from Always Armed. 300 BLK AR uppers are the top choice for your next hunting AR15. Using the standard 5.56 bolt carrier group, the .300 Blackout uppers are the go to pick when AR builders are looking for a new caliber in their AR-15 as they can be easily swapped out on existing AR lowers.

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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 10.5" 300 BLACKOUT UPPER RECEIVER - BLACK ANODIZED

    Now: $169.00
    Was: $249.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Black 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: $169.00
    Was: $249.00
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    Now: $169.00
    Was: $249.00
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  • Always Armed 16" 1:8 Twist 300 Blackout Upper Receiver - Black AR15 Always Armed Upper with 1:8 Twist Barrel
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    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    Always Armed 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 Finish Chambered in .300 Blackout Pistol Length Gas System .750...
    Now: $199.00
    Was: $269.00
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    Was: $269.00
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  • Always Armed 7.5" 300 Blackout Upper Receiver - Black Anodized AR-15 Always Armed 7.5" Upper with 1:8 Twist 4150 Steel Barrel
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    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Black 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: $189.00
    Was: $249.00
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    Was: $249.00
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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: $219.00
    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 Barrel with Black Nitride Finish Chambered in .300...
    Now: $219.00
    Was: $279.00
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    Was: $279.00
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  • OCTO Series AR 15 Pistol Upper | Milspec Dust Cover and Forward Assist free float 9.25" M-LOK Hand rail
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    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BLACK Made in the USA 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 Black Nitride Finish A2...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • ALWAYS ARMED 16" UPPER RECEIVER COMBO DEAL .300 BLACKOUT RIFLE UPPER RECEIVER - M4
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    ALWAYS ARMED 16" UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT

    Now: $399.00
    Was: $538.00
    Always Armed 16" 5.56 NATO Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:7  Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System .750...
    Now: $399.00
    Was: $538.00
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    Now: $399.00
    Was: $538.00
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  • ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - STAINLESS STEEL
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLEMISHED

    $279.00
    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLEMISHED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 Blackout Pistol...
    $279.00
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    $279.00
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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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    Now: $199.00
    Was: $269.00
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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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    Now: $189.00
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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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    Was: $249.00
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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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  • 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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    Was: $269.00
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  • ALWAYS ARMED 16" .300 BLACKOUT TR UPPER RECEIVER - BLACK Get this .300 blackout upper for your next rifle build
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    ALWAYS ARMED 16" .300 BLACKOUT TR UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED 16" .300 BLACKOUT TR UPPER RECEIVER 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: $199.00
    Was: $269.00
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  • ALWAYS ARMED STAINLESS STEEL 7.5" 300 BLACKOUT UPPER RECEIVER WITH ENHANCED MUZZLE DEVICE
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    ALWAYS ARMED STAINLESS STEEL 7.5" 300 BLACKOUT UPPER RECEIVER WITH ENHANCED MUZZLE DEVICE - BLACK ANODIZED

    $289.00
    ALWAYS ARMED STAINLESS STEEL 7.5" 300 BLACKOUT UPPER RECEIVER WITH ENHANCED MUZZLE DEVICE 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...
    $289.00
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    $289.00
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  • ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH 9.25" RAIL, ADJUSTABLE GAS BLOCK AND ENHANCED SS MUZZLE DEVICE
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    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH 9.25" RAIL, ADJUSTABLE GAS BLOCK AND ENHANCED SS MUZZLE DEVICE - BLACK ANODIZED

    $309.99
    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH 9.25" RAIL, ADJUSTABLE GAS BLOCK AND ENHANCED SS MUZZLE DEVICE 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...
    $309.99
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    $309.99
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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

    Now: $219.00
    Was: $299.00
    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 receiver Upper machined from 7075 forged aluminum A2 flash hider...
    Now: $219.00
    Was: $299.00
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    Now: $219.00
    Was: $299.00
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  • ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - BLACK OCTO SERIES 7" FREE FLOAT M-LOK HAND RAIL
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    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - BLACK Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7" Free Float M-LOK OCTO Series Rail 7.5" 1:8 Twist Barrel with Black Nitride Finish A2 Flash Hider Hard Coat...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • Grid Defense 10.5" .300 Blackout AR-15 Pistol Upper Receiver Milspec .300 Blackout Upper Receiver with 12" M-Lok Rail and Dimpled Flash Can
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Black Anodized

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Black Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec .300 Blackout Flash Can Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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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 Pitch Chambered in .300 Blackout (7.62x35) .750 Low Profile...
    Now: $209.00
    Was: $319.00
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    Now: $209.00
    Was: $319.00
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