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 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK
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    ALWAYS ARMED 7.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 7.5" 5.56 NATO TR Series Upper Receiver - Black 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 Gas...
    Now: $189.00
    Was: $249.00
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    Was: $249.00
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  • 16" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN Always Armed AR15 Upper Receiver | M-LOK Free Float Rail
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN Made in the USA Zombie Green 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...
    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE RIDGEWAY BLUE | 7.5" 5.56 NATO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO 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" 1:7 Twist Barrel with Black Nitride Finish A2 Flash Hider Finished...
    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - SMITH & WESSON RED SMITH & WESSON RED CERAKOTE | 7.5" 5.56 NATO BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - SMITH & WESSON RED

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - SMITH & WESSON RED 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...
    Now: $209.00
    Was: $299.00
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  • Magpul OD Green AR15 5.56 Flash Can Upper Receiver with 7.5" barrel and 9" rail by Grid Defense Magpul OD Green AR15 5.56 Flash Can Upper Receiver with 7.5" barrel and 9" rail by Grid Defense
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - OD Green

    Now: $329.00
    Was: $399.00
    Grid Defense OD Green 7.5" 5.56 Flash Can Upper  Finished in Magpul Olive Drab Green Cerakote 7075-T6 Mil Spec Upper Receiver Chambered in 5.56x45 NATO 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Grid Defense Octagon M Lok Rail Dimpled Flash...
    Now: $329.00
    Was: $399.00
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  • ALWAYS ARMED 10.5" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN This 10.5" Upper is ready for your next statement build finished in zombie green cerakote
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    ALWAYS ARMED 10.5" 5.56 NATO UPPER RECEIVER - ZOMBIE GREEN

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 5.56 NATO Upper Receiver - Zombie Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas...
    Now: $209.00
    Was: $299.00
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    Was: $299.00
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  • ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Bazooka Green Get this Upper receiver chambered in 5.56 nato and finished in bazooka green cerakote
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Bazooka Green

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Bazooka Green Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Finished in Bazooka Green Cerakote Carbine Length Gas System .750 Gas...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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  • ALWAYS ARMED | CARBINE LENGTH GAS SYSTEM | 15" M-LOK HAND GUARD TITANIUM CERAKOTE | 5.56 NATO | AR-15
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    Always Armed 16" Stainless Steel 5.56 Nato Upper Receiver - Titanium

    Now: $209.00
    Was: $349.00
    Always Armed 16" Stainless Steel 5.56 Nato Upper Receiver - Titanium Titanium Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 16" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Carbine Length Gas System .750 Low Profile Gas...
    Now: $209.00
    Was: $349.00
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    Was: $349.00
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  • ALWAYS ARMED 7.5" 5.56 NATO OCTO SERIES UPPER RECEIVER - MAGPUL FDE This upper is the best for your next CQB 5.56 upper build
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    ALWAYS ARMED 7.5" 5.56 NATO OCTO SERIES UPPER RECEIVER - MAGPUL FDE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 5.56 NATO OCTO Series Upper Receiver - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol Length...
    Now: $209.00
    Was: $299.00
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    Was: $299.00
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  • Always Armed Jester 16" 5.56 Nato Upper Receiver 16" 1:7 Twist 5.56 Nato Barrel
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    ALWAYS ARMED Jester 16" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 5.56 Nato 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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  • Ghost Vital 7.5" Upper 5.56 Nato
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    Ghost Vital 7.5" Upper 5.56 Nato

    Now: $239.00
    Was: $299.00
    Ghost Firearms Vital 7.5" Upper  Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System  Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost...
    Now: $239.00
    Was: $299.00
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    Now: $239.00
    Was: $299.00
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  • Black Anodized Pistol Upper Receiver Chambered in 5.56 NATO - Grid Defense Milspec AR 15 Pistol Upper Receiver by Grid Defense
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Black Anodized

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Hard Coat Black Anodized Finish Made in the USA 7075-T6 Mil-Spec Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO Carbine Length Gas System .750 Low Profile...
    Now: $329.00
    Was: $399.00
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  • ALWAYS ARMED 10.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK Shop this upper for your next SBR or Pistol ar build
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    ALWAYS ARMED 10.5" 5.56 NATO TR SERIES UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 10.5" 5.56 NATO TR Series Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • 15" Free Float M-LOK Quad Rail ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Grape
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Grape

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Grape Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Finished in Grape Cerakote Carbine Length Gas System A2 Muzzle Device 1:7 Twist Rate BCG...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • ALWAYS ARMED 7.5" BLACK 5.56 UPPER WITH 7" OD GREEN HANDRAIL 7.5" 5.56 NATO 1:7 twist Barrel
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    ALWAYS ARMED 7.5" BLACK 5.56 UPPER WITH 7" MAGPUL OD GREEN HANDRAIL

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED 7.5" BLACK 5.56 UPPER WITH 7" MAGPUL OD GREEN HANDRAIL Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist with Hard Coat Black Anodized Finish 10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish 7" Free...
    Now: $199.00
    Was: $269.00
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    Now: $199.00
    Was: $269.00
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  • Most Dependable 10.5" Upper Receiver | Hard Coat Black Anodized AR 15 5.56 NATO 10.5" Upper with 1:7 Twist
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    BLEMISHED ALWAYS ARMED 10.5" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Blemished Always Armed 10.5" 5.56 NATO Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • Mil-Spec AR15 Pistol Upper Receiver with 10.5" 1:7 twist barrel, 12" M-LOK rail and Flash Can Grid Defense 10.5" 5.56 NATO Upper Receiver in Tungsten Gray
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Tungsten Gray

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Dimpled Flash Can Upper in Tungsten Gray  Finished in Tungsten Gray Cerakote Made in the USA 7075-T6 Mil-Spec 10.5" Flash Can Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • ALWAYS ARMED 10.5" 5.56 NATO UPPER WITH FDE FLASH CAN - BLACK Get this upper receiver for your next build including a flash can to keep the gas and blast off your face.
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    ALWAYS ARMED 10.5" 5.56 NATO UPPER WITH FDE FLASH CAN - BLACK

    Now: $239.00
    Was: $329.00
    ALWAYS ARMED 10.5" 5.56 NATO FLAHS CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length Gas System ...
    Now: $239.00
    Was: $329.00
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    Now: $239.00
    Was: $329.00
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  • ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 15" OD GREEN RAIL 16" 5.56 NATO 1:7 twist Barrel
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    ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 15" MAGPUL OD GREEN RAIL

    Now: $199.00
    Was: $309.00
    ALWAYS ARMED 16" 5.56 NATO BLACK UPPER RECEIVER WITH 15" MAGPUL OD GREEN 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...
    Now: $199.00
    Was: $309.00
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  • ALWAYS ARMED 16" 5.56 NATO MID LENGTH UPPER RECEIVER - BLACK AR-15 Upper 16" with 1:7 Twist Barrel and M-LOK Hand Guard
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    ALWAYS ARMED 16" 5.56 NATO MID LENGTH UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO MID LENGTH UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:7 Twist 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid Length Gas System ...
    Now: $199.00
    Was: $319.00
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