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 ULTRALIGHT SERIES 16" 5.56 NATO UPPER RECEIVER WITH 15" HAND GUARD - BLACK Get the best lightweight upper there is with the full picatinny compatibility and featherweight design
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    ALWAYS ARMED ULTRALIGHT SERIES 16" 5.56 NATO UPPER RECEIVER WITH 15" HAND GUARD - BLACK

    Now: $199.00
    Was: $339.00
    ALWAYS ARMED ULTRALIGHT SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" Pencil Profile 4150 Steel Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid...
    Now: $199.00
    Was: $339.00
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    Now: $199.00
    Was: $339.00
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  • ALWAYS ARMED OCT2 SERIES 16" 5.56 UPPER RECEIVER - BLACK Mil Spec AR15 Rifle Upper Receiver with M-LOK Free Float Rail
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    BLEM ALWAYS ARMED OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $179.00
    Was: $269.00
    BLEMISHED ALWAYS ARMED OCT2 SERIES 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 .750...
    Now: $179.00
    Was: $269.00
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    Now: $179.00
    Was: $269.00
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  • GHOST 16" 5.56 BLUT TITANIUM UPPER RECEIVER WITH 14" TUNGSTEN GRAY M-LOK RAIL 16" 5.56 NATO 4150R BARREL
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    GHOST 16" 5.56 BLUE TITANIUM UPPER RECEIVER WITH 14" TUNGSTEN GRAY M-LOK RAIL

    Now: $259.00
    Was: $329.00
    GHOST 16" 5.56 NATO UPPER RECEIVER Chambered in 5.56 NATO 7075 T6 Forged Aluminum Mil-Spec AR15 Upper Receiver - Blue Titanium A2 Birdcage Flash Hider 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System Ghost Firearms Tungsten Gray 14"...
    Now: $259.00
    Was: $329.00
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    Now: $259.00
    Was: $329.00
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  • AR 15 Pistol Upper Receiver | 10.5" Barrel | 1:7 Twist Rate Mil Spec | 12" M-LOK Hand Guard | Dimpled Flash Can
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Pink Champagne

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Pink Champagne Cerakote 5.56 Upper Receiver 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...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • 10.5" 5.56 1:7 Twist Barel Tungsten Gray Milspec Pistol Upper Receiver with 9" MLOK Compatible Hand Guard
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    Grid Defense 10.5" 5.56 Upper Receiver - Tungsten Gray

    Now: $329.00
    Was: $379.00
    Grid Defense 10.5" 5.56 Upper Receiver Finished in Tungsten Gray Cerakote Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System A2 Flash Hider...
    Now: $329.00
    Was: $379.00
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    Now: $329.00
    Was: $379.00
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  • Mil Spec Grid Defense Blue Titanium Flash Can Upper Receiver with 9" M-Lok Rail and 7.5" 5.56 NATO Barrel. AR15 7.5" 5.56 Flash Can Upper Receiver by Grid Defense in Blue Titanium Cerakote
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Blue Titanium

    Now: $329.00
    Was: $399.00
    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Blue Titanium  Finished in Blue Titanium Cerakote Made in the USA 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Octagon M-Lok Hand Guard Dimpled Flash Can 7075-T6 Mil Spec Upper Receiver...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • AR15 7.5" 5.56 Flash Can Upper Receiver - Burnt Bronze Grid Defense Mil-Spec Burnt Bronze AR 15 Upper Receiver with 7.5" 1:7 Twist 5.56 M4 Barrel, 9" M-Lok Rail and Dimpled Flash Can
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Burnt Bronze

    Now: $329.00
    Was: $399.00
    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Burnt Bronze Finished in Burnt Bronze Cerakote Mil-spec 7075-T6 5.56 Flash Can Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride 9" Grid Defense Octagon M-Lok Rail Pistol Length Gas System...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • 10.5" Mil Spec Upper Receiver | AR15 Carbine Length Gas System | M-LOK Rail | 5.56 NATO
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    GRID DEFENSE GX2 10.5" 5.56 UPPER RECEIVER - BLACK

    Now: $329.00
    Was: $379.00
    Grid Defense GX2 10.5" 5.56 Upper Receiver Hard Coat Black Anodized Chambered in 5.56x45 NATO 7075-T6 Milspec Upper Receiver 10.5" 1:7 Twist 4150 Steel M4 Barrel - Black Nitride .750 Low Profile Gas Block Carbine Length Gas System 9" Grid Defense GX2...
    Now: $329.00
    Was: $379.00
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    Now: $329.00
    Was: $379.00
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  • AR15 Rifle Upper Receiver | Strike Industries Billet Dust Cover 16" 5.56 NATO | Mil Spec Upper | Periwinkle Cerakote
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    Grid Defense Limited Edition 16" 5.56 NATO Upper with Strike Industries Accessories - Periwinkle/Blue

    $502.85
    Grid Defense 16" 5.56 Upper Receiver - Periwinkle Periwinkle Cerakote Finish Chambered in 5.56x45 NATO 14" M-Lok Rail 16" 1:7 4150 M4 Barrel - Black Nitride Carbine Length Gas System A2 Flash Hider Mil-Spec 7075-T6 Upper Receiver Strike Industries...
    $502.85
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    $502.85
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  • TUNGSTEN GRAY CERAKOTE | .556 NATO | AR-15 GRID DEFENSE | PISTOL LENGTH GAS SYSTEM | 7" M-LOK HAND GUARD
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    Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver With Free MBUS Sights - Tungsten Gray

    $496.50
    Grid Defense Stainless Steel 7.5" 5.56 Upper Receiver Tungsten Gray Cerakote Finish Chambered in 5.56 NATO Stainless Steel A2 Flash Hider 7.5" 1:7 Twist 416R Stainless Steel Barrel - M4 Profile Pistol Length Gas System Grid Defense 7" M-Lok Free Float...
    $496.50
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    $496.50
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  • ALWAYS ARMED 7.5" 5.56 NATO COMPLETE UPPER WITH BCG/CHARGING HANDLE - BLACK ANODIZED Most Accurate Black Anodized Pistol Upper Receiver
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    ALWAYS ARMED 7.5" 5.56 NATO COMPLETE UPPER WITH BCG/CHARGING HANDLE - BLACK ANODIZED

    Now: $229.00
    Was: $349.00
    Always Armed 7.5" 5.56 NATO Complete Upper Receiver - Black Anodized 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: $229.00
    Was: $349.00
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    Now: $229.00
    Was: $349.00
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  • ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - TUNGSTEN GRAY ALWAYS ARMED 15" FREE FLOAT LIGHTWEIGHT M-LOK BOX RAIL HAND GUARD
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    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - TUNGSTEN GRAY

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - TUNGSTEN GRAY 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: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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