5.56mm Uppers

5.56mm Uppers

Discover high-performance 5.56 upper receivers for your AR-15 at Always Armed. Our Cerakote-finished 5.56 NATO AR-15 uppers offer accuracy, durability, and style. Shop the best AR-15 upper receivers for rifle and pistol builds today.

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  • ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Smith & Wesson Red Shop for your next training day with this quad rail upper from always armed
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Smith & Wesson Red

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Smith & Wesson Red Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Finished in Smith & Wesson Red Cerakote Carbine Length Gas System ...
    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - OD GREEN 16" 1:7 Twist 5.56 Nato Barrel
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    ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - OD GREEN

    $299.00
    ALWAYS ARMED 16" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - OD GREEN Made in the USA Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist  16" 1:7  Twist 416R Stainless Steel Barrel Chambered in 5.56 NATO...
    $299.00
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  • ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - MAGPUL FDE Shop this upper for your next 5.56 build. Designed to be lightweight and easy to maneuver with.
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    ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $229.00
    Was: $329.00
    Always Armed 16" 5.56 NATO TRX Series Upper Receiver - FDE 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...
    Now: $229.00
    Was: $329.00
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  • ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - OD GREEN Shop this 16" upper receiver for your next rifle build. Chambered in 5.56 and ready for whatever you throw at it.
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    ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - OD GREEN

    Now: $229.00
    Was: $329.00
    Always Armed 16" 5.56 NATO TRX Series Upper Receiver - OD Green 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...
    Now: $229.00
    Was: $329.00
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  • ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BURNT BRONZE This mil-spec upper is finished in a burnt bronze cerakote that is tough enough for any challenge
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    ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 5.56 NATO TR Series Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 7.5" STAINLESS STEEL 5.56 BR SERIES DIMPLED FLASH CAN UPPER RECEIVER - BLACK ANODIZED 416R stainless steel 1:7 twist rate barrel
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    ALWAYS ARMED 7.5" STAINLESS STEEL 5.56 NATO BR SERIES DIMPLED FLASH CAN UPPER RECEIVER - BLACK ANODIZED

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED 7.5" STAINLESS STEEL 5.56 NATO BR SERIES DIMPLED FLASH CAN UPPER RECEIVER - BLACK ANODIZED Made in the USA Chambered in 556mm Mil Spec 556mm Upper Receiver 7.5" 416R Stainless Steel Barrel 1:7 Twist Rate 9" BR Series Free Float M-LOK...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - PINK CHAMPAGNE 16" 1:7 twist 5.56 nato barrel
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - PINK CHAMPAGNE

    Now: $199.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - PINK CHAMPAGNE Made in the USA Pink Champagne 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 with...
    Now: $199.00
    Was: $319.00
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    Now: $199.00
    Was: $319.00
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  • ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Mil Spec AR15 Rifle Upper Receiver with M-LOK Free Float Rail
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER WITH 12" RAIL- 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...
    Now: $199.00
    Was: $269.00
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    Was: $269.00
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  • ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - TITANIUM TITANIUM | 7.5" 5.56 NATO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - TITANIUM

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO 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" 1:7 Twist Barrel with Black Nitride Finish A2 Flash Hider Finished in...
    Now: $209.00
    Was: $299.00
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  • Ghost Vital 10.5" Upper 5.56 Nato
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    Ghost Vital 10.5" Upper 5.56 Nato - Black

    Now: $239.00
    Was: $299.00
    Ghost Vital 10.5" Upper 5.56 Nato Chambered in 5.56 NATO Mil Spec Upper Receiver with Dust Cover and Forward Assist A2 Birdcage Flash Hider 10.5" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System Ghost Firearms 9' M-Lok Hand Guard Hard Coat...
    Now: $239.00
    Was: $299.00
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  • ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 12" FDE RAIL
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    ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 12" FDE RAIL

    Now: $209.00
    Was: $309.00
    ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 12" FDE RAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  Upper Receiver Finished in Hard Coat Black Anodize 16" 1:7 Twist 4150 Barrel with Black Nitride...
    Now: $209.00
    Was: $309.00
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  • ALWAYS ARMED 16" 5.56 NATO OCTO SERIES UPPER RECEIVER - TITANIUM 16" 5.56 1:7 Twist black nitride barrel
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    ALWAYS ARMED 16" 5.56 NATO OCTO SERIES UPPER RECEIVER - TITANIUM

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO OCTO SERIES UPPER RECEIVER - TITANIUM 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...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Sig Pink Shop and save on this versatile 5.56 upper receiver finished in Sig Pink perfect for the shooter just starting to explore
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Sig Pink

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Sig Pink Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Finished in Sig Pink Cerakote Carbine Length Gas System .750 Gas Block A2 Muzzle Device...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO TR SERIES UPPER RECEIVER - MAGPUL FDE 5.56 NATO is the most common AR round in the US. After being the military standard for combat rifle.
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    ALWAYS ARMED 16" 5.56 NATO TR SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $219.00
    Was: $319.00
    Always Armed 16" 5.56 NATO TR Series Upper Receiver - FDE 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...
    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - BURNT BRONZE This new lightweight upper receiver is ready for hunting season. Finished in Burnt Bronze to blend in while still having a little bit of flair.
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    ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - BURNT BRONZE

    Now: $229.00
    Was: $329.00
    Always Armed 16" 5.56 NATO TRX Series Upper Receiver - Burnt Bronze 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...
    Now: $229.00
    Was: $329.00
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  • ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - GOLD Discover the ALWAYS ARMED 16" 5.56 NATO TRX Series Upper Receiver in Gold, crafted for durability and peak performance. This upper receiver combines premium construction with a standout gold finish for a reliable and striking AR build.
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    ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - GOLD

    Now: $239.00
    Was: $339.00
    Always Armed 16" 5.56 NATO TRX Series Upper Receiver - Gold 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...
    Now: $239.00
    Was: $339.00
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    Now: $239.00
    Was: $339.00
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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: $395.00
    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 ...
    Now: $395.00
    Was: $558.00
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    Now: $395.00
    Was: $558.00
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  • ALWAYS ARMED 7.5" 5.56 BLACK UPPER RECEIVER BAZOOKA GREEN HANDRAIL
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    ALWAYS ARMED 7.5" 5.56 BLACK UPPER RECEIVER BAZOOKA GREEN HANDRAIL

    Now: $199.00
    Was: $289.00
    ALWAYS ARMED 7.5" 5.56 BLACK UPPER RECEIVER BAZOOKA GREEN HANDRAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist Upper Finished in Hard Coat Black Anodize 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish...
    Now: $199.00
    Was: $289.00
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    Now: $199.00
    Was: $289.00
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  • ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER - BLUE TITANIUM
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    ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER - BLUE TITANIUM

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 7.5" Nato Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length Gas System .750 Low Profile...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
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  • 16" 5.56 NATO UPPER RECEIVER | ALWAYS ARMED MAGPUL FLAT DARK EARTH | AR15 | MIL SPEC UPPER
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    ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER - FDE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER 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 Low...
    Now: $219.00
    Was: $319.00
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