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 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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  • Always Armed Jester 16" .300 Blackout Upper Receiver 16" 1:8 Twist .300 Blackout Barrel
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    ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER - BLACK

    $299.00
    ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER Chambered in .300 Blackout Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Hard Coat Black Anodized Finish Carbine Length...
    $299.00
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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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    Was: $249.00
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  • AR15 Rifle Upper Receiver with M-LOK Hand Guard
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    ALWAYS ARMED 16" .300 BLACKOUT UPPER RECEIVER - TUNGSTEN GRAY

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" .300 BLACKOUT UPPER RECEIVER - TUNGSTEN GRAY Made in the USA Mil-Spec 7075 T6 Always Armed Nato Upper Receiver with Dust Cover and Forward Assist 16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...
    Now: $219.00
    Was: $319.00
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  • AR15 Upper Receiver Combo | 5.56 NATO | .300 Blackout
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    ALWAYS ARMED 16" UPPER RECEIVER WITH 12" RAIL COMBO DEAL - 5.56 NATO/.300 BLACKOUT

    Now: $399.00
    Was: $558.00
    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: $558.00
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    Was: $558.00
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  • Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver Burnt Bronze AR15 Pistol Upper Receiver with 12" M-Lok Free Floating Rail
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    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Burnt Bronze

    Now: $349.00
    Was: $399.00
    Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Made in the USA 7075-T6 Mil-Spec Burnt Bronze Upper Receiver 10.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride Chambered in .300 Blackout (7...
    Now: $349.00
    Was: $399.00
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    Was: $399.00
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  • flat dark earth cerakote with 10.5" .300 1:8 twist barrel ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL
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    ALWAYS ARMED 10.5" 300 BLACKOUT BLACK UPPER RECEIVER WITH KEYMOD FDE HANDRAIL

    Now: $199.00
    Was: $289.00
    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 Anodize 10.5" 1:8 Twist 4150 Barrel with Black Nitride...
    Now: $199.00
    Was: $289.00
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    Was: $289.00
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  • ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - MAGPUL FDE
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    ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" .300 BLACKOUT BX SERIES UPPER RECEIVER - MAGPUL FDE 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 OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - TITANIUM TITANIUM | 7.5" .300 BO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - TITANIUM

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - TITANIUM 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 Finished in...
    Now: $209.00
    Was: $299.00
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    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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  • 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: $349.00
    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: $349.00
    Was: $399.00
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    Was: $399.00
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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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    Was: $249.00
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  • ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - TEQUILA SUNRISE 1:7 twist black barrel
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - TEQUILA SUNRISE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - TEQUILA SUNRISE Finished in Tequila Sunrise Cerakote Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist  Pistol Length Gas System 750 Low Profile Gas Block 15" Free...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • Grid Defense AR15 Tungsten Gray 7.5" .300 Blackout Flash Can Upper Milspec Pistol Upper Receiver Chambered in .300 Blackout (7.62x35)
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    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Tungsten Gray

    Now: $349.00
    Was: $399.00
    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Tungsten Gray Finished in Tungsten Gray Cerakote Mil-spec 7075-T6 7.5" Blackout Upper Receiver 7.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride 9" Octagon M-Lok Rail Pistol Length Gas...
    Now: $349.00
    Was: $399.00
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    Was: $399.00
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  • Always Armed 10.5" .300 Blackout Upper Receiver POW MIA AR15 Pistol Upper Receiver | Mil Spec
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    Always Armed 10.5" .300 Blackout Upper Receiver - Tungsten Gray | POW MIA

    Now: $219.00
    Was: $319.00
    Always Armed 10.5" .300 Blackout Upper Receiver Made in the USA Mil-Spec 7075 T6 Upper Receiver with POW MIA Dust Cover and Forward Assist  10.5" 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 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

    $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 Barrel Chambered in .300 Blackout Pistol Length Gas...
    $319.00
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    $319.00
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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: $187.78
    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: $187.78
    Was: $249.00
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    Now: $187.78
    Was: $249.00
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  • ALWAYS ARMED 7.5" 300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED
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    ALWAYS ARMED 7.5" 300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED

    Now: $189.00
    Was: $269.00
    ALWAYS ARMED 7.5" 300 BLACKOUT BX SERIES UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 BX Series Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...
    Now: $189.00
    Was: $269.00
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    Now: $189.00
    Was: $269.00
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  • 16" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE
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    ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE

    $319.00
    ALWAYS ARMED JESTER 16" .300 BLACKOUT UPPER RECEIVER - BURNT BRONZE Made in the USA Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...
    $319.00
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    $319.00
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