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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  • 1:7 Twist 4150 Black Nitride Barrel | Carbine Length Gas System ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - TEQUILA SUNRISE
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - TEQUILA SUNRISE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - TEQUILA SUNRISE Made in the USA Tequila Sunrise 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...
    Now: $219.00
    Was: $319.00
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    Was: $319.00
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  • 5.56 NATO | AR15 Pistol Upper Receiver | Mil Spec 1:7 Twist Black Nitride Barrel with 9.25" M-LOK Hand Guard | Black Anodized
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO WTIH ZOMBIE GREEN FLASH CAN UPPER RECEIVER - BLACK

    Now: $289.00
    Was: $329.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 octo series 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...
    Now: $289.00
    Was: $329.00
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    Was: $329.00
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  • Andro Corp 10.5" 5.56 Front Sight Upper Receiver - Black Shop this M4 style Upper Receiver for your next A2 Upper Receiver build
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    Andro Corp 10.5" 5.56 Front Sight Upper Receiver - Black

    $429.00
    Andro Corp 10.5" 5.56 Front Sight Upper Receiver - Black Made in the USA 10.5" 5.56 NATO Barrel 1:8 Twist Rate 1/2x28 TPI Thread Pitch 7075-T6 Mil-Spec Upper Receiver M4 Handguard Carbine Length Gas System A2 Muzzle Device Black Anodized Mil...
    $429.00
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    $429.00
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  • US MILITARY 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 12" JESTER RAIL - BLACK UNITED STATES MARINE CORPS
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    US MILITARY 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 12" JESTER RAIL - BLACK

    Now: $219.00
    Was: $299.00
    VETERAN'S DAY 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 12" MLOK RAIL - BLACK Hard Coat Black Anodized Finish Mil-Spec AR15 Upper Receiver Mil-Spec Forward Assist  Laser Engraved Dust Cover 12" Jester Free Float M-LOK Rail 10.5" 1:7...
    Now: $219.00
    Was: $299.00
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  • FINISHED IN HARD COAT BLACK ANODIZING 16" 5.56 NATO UPPER RECEIVER WITH 1:7 TWIST BARREL
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 12" KEYMOD HAND GUARD

    Now: $199.00
    Was: $269.00
    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: $199.00
    Was: $269.00
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    Was: $269.00
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  • ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH STAINLESS STEEL HBAR
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH STAINLESS STEEL HBAR, 12" M-LOK RAIL, POP UP SIGHTS AND BIPOD FOREGRIP

    Now: $279.00
    Was: $339.00
    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH STAINLESS STEEL HBAR, 12" M-LOK RAIL, POP UP SIGHTS AND BIPOD FOREGRIP Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:7 Twist 416R Stainless Steel HBAR...
    Now: $279.00
    Was: $339.00
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    Was: $339.00
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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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    Now: $189.00
    Was: $279.00
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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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  • Burnt Bronze 5.56 NATO Upper Receiver by Grid Defense Grid Defense AR15 5.56 Flash Can Pistol Upper Receiver
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Burnt Bronze

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Burnt Bronze Cerakote 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...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • AR15 Tactical Grape 7.5" 5.56 Upper Receiver with 9" rail and dimpled flash can by Grid Defense Grid Defense Mil-Spec 7.5" 5.56 Flash Can Upper Receiver with 9" M-Lok Handguard in purple cerakote
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    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Tactical Grape

    Now: $329.00
    Was: $399.00
    Grid Defense 7.5" 5.56 Flash Can Upper Receiver - Tactical Grape Finished in Purple Cerakote Chambered in 5.56x45 NATO 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride Dimpled Flash Can 9" Grid Defense Octagon Rail Pistol Length Gas System 7075-T6 Mil Spec...
    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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    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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    Now: $279.00
    Was: $437.00
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  • ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - BLUE TITANIUM Save on this new upper receiver from Always Armed. Made with ur new TRX handguard that is designed to be as light as possible without sacrificing rigidity.
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    ALWAYS ARMED 16" 5.56 NATO TRX SERIES UPPER RECEIVER - BLUE TITANIUM

    Now: $229.00
    Was: $329.00
    Always Armed 16" 5.56 NATO TRX Series Upper Receiver - Blue 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...
    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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    Now: $219.00
    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 NATO OCTO SERIES UPPER RECEIVER - BURNT BRONZE Mil Spec AR15 Pistol Upper Receiver 7.5" - Cerakoted Burnt Bronze
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    ALWAYS ARMED 7.5" 5.56 NATO OCTO SERIES UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 5.56 NATO Octo Series Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Pistol...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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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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  • Ridgeway Blue AR15 Upper Receiver | 5.56 NATO
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER - RIDGEWAY BLUE Made in the USA Ridgeway Blue 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: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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