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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  • AR15 Upper Receiver | .300 Blackout Mil Spec AR-15 Upper Chambered in 7.62x35mm
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - TUNGSTEN GRAY

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - TUNGSTEN GRAY Finished in Tungsten Gray 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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  • ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - SIG PINK SIG PINK | 7.5" .300 BO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - SIG PINK

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - SIG PINK 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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  • 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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  • 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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  • AR15 Upper Receiver | .300 Blackout Finished in Smith & Wesson Red Cerakote
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED Made in the USA Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:8 Twist Barrel with Black Nitride...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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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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    Was: $319.00
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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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  • 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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  • ALWAYS ARMED 7.5" 300 BLACKOUT OCTO SERIES UPPER RECEIVER - BURNT BRONZE Get the best made in the usa upper receiver for your next pistol length ar build
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    ALWAYS ARMED 7.5" 300 BLACKOUT OCTO SERIES UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Octo Series Upper Receiver - Burnt Bronze 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...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 7.5" 300 BLACKOUT OCTO SERIES UPPER RECEIVER - MAGPUL FDE Shop this .300 caliber upper for your next suppressed CQB upper
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    ALWAYS ARMED 7.5" 300 BLACKOUT OCTO SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout OCTO Series Upper Receiver - Magpul FDE 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...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BURNT BRONZE Shop this .300 blackout upper for your next suppressed build
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    ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout TR Series Upper Receiver - Burnt Bronze 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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  • ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - MAGPUL FDE Shop this upper for your next suppressed .300 blackout build. the best upper for sub sonic shooting
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    ALWAYS ARMED 7.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout TR Series Upper Receiver - Magpul FDE 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...
    Now: $209.00
    Was: $299.00
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    Was: $299.00
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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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  • 16" .300 Blackout Upper Receiver with Stainless Steel 1:8 Barrel ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL AND AXE BRAKE - BLACK
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    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL AND AXE BRAKE - BLACK

    Now: $299.00
    Was: $359.00
    ALWAYS ARMED OCTO SERIES 16" .300 BLACKOUT UPPER RECEIVER Made in the USA Hard Coat Black Anodized Finish Mil-Spec AR15 7075 T6 .300 Blackout Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:8 Twist 416R...
    Now: $299.00
    Was: $359.00
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    Was: $359.00
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  • ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE RIDGEWAY BLUE | 7.5" .300 BO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" .300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE 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...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • Ghost Firearms 16" .300 Blackout Upper Receiver in Blue Titanium Cerakote Cerakoted Blue Titanium 16" .300 Blackout Upper Receiver by Ghost Firearms
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    Ghost Elite 16" Upper .300 AAC Blackout - Blue Titanium

    Now: $259.00
    Was: $329.00
    GHOST ELITE 16" UPPER - .300 AAC BLACKOUT UPPER - BLUE TITANIUM Chambered in .300 Blackout (7.62x35) A2 Flash Hider 16" 1:8 Twist 4150 Light HBar Barrel Black Nitride Pistol Length Gas System  Ghost 14" M-Lok Free Float Hand...
    Now: $259.00
    Was: $329.00
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    Now: $259.00
    Was: $329.00
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  • Grid Defense 10.5" .300 Blackout Flash Can Upper Receiver
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    GRID DEFENSE 10.5" .300 BLACKOUT FLASH CAN UPPER RECEIVER - TUNGSTEN GRAY

    Now: $329.00
    Was: $399.00
     GRID DEFENSE 10.5" .300 BLACKOUT DIMPLED FLASH CAN UPPER TUNGSTEN GRAY  Finished in Tungsten Gray Cerakote Made in the USA 7075-T6 Mil-Spec .300 Blackout Upper Receiver 10.5" 1:8 Twist 4150 Light HBAR Barrel - Black Nitride Chambered...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • Grid Defense AR15 7.5" .300 Blackout Flash Can Upper Receiver in Burnt Bronze Milspec AR-15 Pistol Upper Receiver by Grid Defense
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    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Burnt Bronze

    Now: $349.00
    Was: $399.00
    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - Burnt Bronze Made in the USA Chambered in .300 Blackout (7.62x35) Dimpled Flash Can  Pistol Length Gas System 9" Grid Defense Octagon M-Lok Rail 7.5" 1:8 Twist 4150 Light HBar Barrel -...
    Now: $349.00
    Was: $399.00
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    Now: $349.00
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  • Milspec AR15 Pistol Upper Receiver finished in Magpul FDE Grid Defense AR 15 .300 Blackout Flash Can Upper Receiver
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    Grid Defense 7.5" .300 Blackout Flash Can Upper Receiver - FDE

    Now: $349.00
    Was: $399.00
    Grid Defense 7.5" .300 Blackout Pistol Upper Receiver - Flat Dark Earth Chambered in .300 Blackout 7.5" 1:8 Twist 4150 Light HBar Barrel - Black Nitride 7075-T6 Milspec Upper Receiver Pistol Length Gas System  .750 Low Profile Gas Block Dimpled...
    Now: $349.00
    Was: $399.00
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    Now: $349.00
    Was: $399.00
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  • ALWAYS ARMED 10.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BLACK ANODIZED Shop this black upper receiver for your next ar-15 .300 blackout diy build
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    ALWAYS ARMED 10.5" 300 BLACKOUT TR SERIES UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 10.5" 300 Blackout TR Series 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...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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