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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  • Chambered in 5.56 NATO 7" Free Float M-LOK TR Series Hand Rail
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    ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL TR SERIES UPPER RECEIVER - BLACK ANODIZED

    Now: $189.00
    Was: $279.00
    ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL TR SERIES 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 416R Stainless Steel Barrel Chambered in 5.56 NATO Pistol...
    Now: $189.00
    Was: $279.00
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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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    Was: $299.00
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  • AR15 Upper Receiver | 5.56 NATO Finished in Smith & Wesson Red Cerakote
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - SMITH & WESSON RED

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO 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" 1:7 Twist Barrel with Black Nitride Finish...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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  • Always Armed Flash Can Upper Receiver with Orange Billet Dust Cover and Forward Assist
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH TEQUILA SUNRISE CAN, TIMBER CREEK ORANGE DUST COVER AND FORWARD ASSIST

    $388.98
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 5.56 Nato Flash Can Upper Receiver Timber Creek Billet Dust Cover - Orange Anodized Timber Creek Forward Assist - Orange Anodized  7.5" 1:7 Twist 4150...
    $388.98
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    $388.98
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  • ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - BLACK 7.5" 5.56 NATO 1"7 TWIST BARREL
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $279.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO UPPER RECEIVER - BLACK 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 Hard Coat Black...
    Now: $189.00
    Was: $279.00
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    Now: $189.00
    Was: $279.00
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  • Shop this Complete AR-15 5.56 Upper Receiver for your next range and training gun
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    ALWAYS ARMED 16" 5.56 NATO COMPLETE PENCIL BARREL LIGHTWEIGHT UPPER RECEIVER - BLACK

    Now: $279.00
    Was: $437.00
    Always Armed 16" 5.56 NATO Complete Lightweight Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" Pencil Profile Barrel 1:7  Twist 4150 Barrel with Black Nitride Finish Chambered in...
    Now: $279.00
    Was: $437.00
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    Was: $437.00
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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 - 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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    Now: $229.00
    Was: $329.00
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  • ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - SNIPER GRAY 7075 T6 Forged Upper Receiver with Free Float M-LOK Hand Guard
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - SNIPER GRAY

    Now: $219.00
    Was: $319.00
    Always Armed 16" 5.56 NATO Upper Receiver - Sniper 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 Gas System ...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 10" M-LOK RAIL - TUNGSTEN GRAY
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 10" M-LOK RAIL - TUNGSTEN GRAY

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 10" M-LOK RAIL - TUNGSTEN GRAY Made in the USA Mil Spec AR15 Upper Receiver 15" M-Lok Hand Guard A2 Flash Hider 1:7 Twist 4150 Steel Barrel with Black Nitride Finish .750 Low Profile Gas Block Stainless...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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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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    Was: $289.00
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  • 16" 5.56 NATO UPPER RECEIVER - BURNT BRONZE
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    ALWAYS ARMED JESTER 16" 5.56 NATO UPPER RECEIVER - BURNT BRONZE

    Now: $219.00
    Was: $319.00
    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 Gas...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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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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  • AR15 Upper Receiver | Hard Coat Black Anodized Rifle Upper Chambered in 5.56 NATO | Mil Spec
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER WITH STAINLESS STEEL BARREL AND AXE BRAKE - BLACK

    $299.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER Made in the USA Hard Coat Black Anodized Finish Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist 15" Free Float M-LOK OCTO Series Rail 16" 1:7 Twist 416R Stainless Steel...
    $299.00
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    $299.00
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  • Ghost Elite 16" Upper 5.56 NATO - Black
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    Ghost Elite 16" Upper 5.56 NATO - Black

    Now: $249.00
    Was: $299.00
    Ghost Firearms 16" 5.56 NATO Upper Receiver - Black Mil-Spec 7075 Forged Aluminum Black 16" Nato Upper Receiver 14" Ghost Firearms M-Lok Rail Black Anodized Finish 16" 1:7 Twist 4150 M4 Barrel - Black Nitride A2 Birdcage Muzzle Device Carbine Length Gas...
    Now: $249.00
    Was: $299.00
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    Now: $249.00
    Was: $299.00
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  • AR15 16" 5.56/.223 Upper Receiver in Tungsten Gray by Grid Defense Grid Defense AR-15 Milspec 16" 5.56 NATO Upper Receiver in Tungsten Gray
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    Grid Defense 16" 5.56 Upper Receiver - Tungsten Gray

    Now: $329.00
    Was: $399.00
    Grid Defense 16" 5.56 Upper Receiver - Tungsten Gray  Tungsten Gray 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
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • Milspec Grid Defense AR-15 Upper Receiver with 7.5" 5.56 barrel, 9" rail and dimpled flash can finished in Magpul Flat Dark Earth FDE AR15 Grid Defense 7.5" 5.56 NATO Flash Can Upper Receiver
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - FDE

    Now: $329.00
    Was: $399.00
    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - FDE Finished in Magpul Flat Dark Earth Cerakote 7075-T6 Mil-Spec 5.56 Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO 9" Octagon M-Lok Handguard Dimpled Flash...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • AR15 Tungsten Gray 7.5" 5.56 Flash Can Upper Receiver with 9" M-lok Rail Mil Spec Grid Defense 7.5" 5.56 NATO Upper Receiver with 9" Handguard and Dimpled Flash Can in Tungsten Gray Cerakote
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Tungsten Gray

    Now: $329.00
    Was: $399.00
    Grid Defense 7.5" 5.56 Flash Can Upper - Tungsten Gray Finished in Tungsten Gray Cerakote 7075-T6 MilSpec Upper Receiver 7.5" 1:7 Twist 4150 Barrel - Black Nitride Chambered in 5.56x45 NATO Dimpled Flash Can 9" M-lok Octagon Rail Pistol Length Gas...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • Grid Defense AR15 5.56 Upper | GX2 7.5" 5.56/.223 Upper Receiver | Mil Spec | Black Anodized
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    Grid Defense GX2 7.5" 5.56 Flash Can Upper Receiver - Black Anodized

    Now: $329.00
    Was: $399.00
    Grid Defense GX2 7.5" 5.56 NATO Flash Can Upper Mil-Spec 7075-T6 7.5" Flash Can Upper Receiver 7.5" 1:7 Twist 4150 M4 Barrel - Black Nitride Chambered in 5.56x45 NATO 9" Grid Defense GX2 Octagon M-Lok Rail Dimpled Flash Can  Pistol Length Gas...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • ALWAYS ARMED 16" 5.56 NATO BX SERIES MID LENGTH UPPER RECEIVER - BLACK Mid Length Gas System
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    ALWAYS ARMED 16" 5.56 NATO BX SERIES MID LENGTH UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $279.00
    ALWAYS ARMED 16" 5.56 NATO BX SERIES 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 Barrel with Black Nitride Finish Chambered in 5.56 NATO Mid Length...
    Now: $199.00
    Was: $279.00
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    Now: $199.00
    Was: $279.00
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