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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  • 10.5" 5.56 NATO Upper Receiver by Grid Defense Grid Defense 10.5" 5.56 Blue Titanium AR15 Upper Receiver
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Blue Titanium

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Blue Titanium 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 Carbine 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 Pistol Upper Receiver - FDE Grid Defense AR15 Pistol Upper Receiver - FDE
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - FDE

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Magpul Flat Dark Earth Cerakote Made in the USA 7075-T6 Mil-Spec 5.56 Flash Can Upper Receiver 10.5" 1:7 Twist 4150 M4 Profile Barrel - Black Nitride Chambered in 5.56x45 NATO Carbine Length...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • Grid Defense Tactical Grape 5.56 NATO AR15 Flash Can Upper Receiver Milspec Pistol Upper Receiver in Purple Cerakote by Grid Defense
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - Tactical Grape

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in Purple 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 Profile Gas...
    Now: $329.00
    Was: $399.00
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    Now: $329.00
    Was: $399.00
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  • AR15 Pistol Upper Receiver with Flash Can and Billet Dust Cover
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    Grid Defense Limited Edition 7.5" 5.56 Flash Can Upper With Timber Creek Accessories - Tequila Sunrise

    $458.98
    Grid Defense 7.5" 5.56 NATO Flash Can Upper Receiver - Tequila Sunrise  Finished in Tequila Sunrise Cerakote 5.56 Flash Can Upper Made in the USA 1:7 Twist 7.5" 4150 M4 Barrel - Black Nitride 9" Octagon M-Lok Hand Guard Ridgeway Blue Cerakoted...
    $458.98
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    $458.98
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  • Titanium Always Armed 16" 5.56 NATO Upper Receiver Mil-Spec AR47 Rifle Upper Receiver - Titanium Cerakote Finish
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    LIMITED EDITION ALWAYS ARMED 16" 5.56 4th OF JULY UPPER RECEIVER - TITANIUM

    $579.95
    ALWAYS ARMED 16" 5.56 4th OF JULY UPPER RECEIVER - TITANIUM Always Armed 16" 5.56 NATO 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...
    $579.95
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    $579.95
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  • VETERAN'S DAY 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 9" BX SERIES RAIL - BLACK US COAST GUARD
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    US MILITARY 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 9" BX RAIL - BLACK

    Now: $229.00
    Was: $299.00
    VETERAN'S DAY 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER WITH 9" MLOK RAIL - BLACK Hard Coat Black Anodized Finish Mil-Spec AR15 Upper Receiver Mil-Spec Forward Assist  Laser Engraved Dust Cover 9" BX Series Free Float M-LOK Rail 7.5" 1:7 Twist 4150...
    Now: $229.00
    Was: $299.00
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    Now: $229.00
    Was: $299.00
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  • ALWAYS ARMED 10.5" .556 BX SERIES UPPER RECEIVER 10.5" 5.56 NATO BARREL
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    ALWAYS ARMED 10.5" 5.56 BX SERIES AMERICAN FLAG DUST COVER UPPER RECEIVER - BLACK ANODIZED

    Now: $199.00
    Was: $249.00
    ALWAYS ARMED 10.5" 5.56 AMERICAN FLAG DUST COVER BX SERIES 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...
    Now: $199.00
    Was: $249.00
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    Now: $199.00
    Was: $249.00
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  • ALWAYS ARMED 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - SNIPER GRAY Flash Can Upper receiver with 1:7 twist barrel
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    ALWAYS ARMED 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - SNIPER GRAY

    Now: $229.00
    Was: $319.00
    Always Armed 10.5" 5.56 NATO Flash Can Upper Receiver - Sniper Gray 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: $229.00
    Was: $319.00
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    Now: $229.00
    Was: $319.00
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  • Midnight Bronze 16" 5.56 NATO Upper Receiver | 15" M-LOK Hand Guard
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    ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER - MIDNIGHT BRONZE

    $319.00
    ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 5.56 Mako 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 Profile...
    $319.00
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    $319.00
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  • AR-15 Rifle Upper Receiver | 15" M-Lok Hand Guard
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    ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER - MULTICAM GRAY

    $319.00
    ALWAYS ARMED 16" 5.56 MAKO 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 Profile Gas...
    $319.00
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    $319.00
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  • ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER - POLAR BLUE
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    ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER - POLAR BLUE

    $319.00
    ALWAYS ARMED 16" 5.56 MAKO UPPER RECEIVER Made in the USA Mil-Spec 7075 T6 16 Inch 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 Profile...
    $319.00
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    $319.00
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  • ALWAYS ARMED 16" 5.56 NATO Jester Rail Upper Receiver ALWAYS ARMED 16" 5.56 NATO Jester Rail Upper Receiver
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    ALWAYS ARMED 16" 5.56 NATO Jester Rail Upper Receiver

    $209.00 - $229.00
    ALWAYS ARMED 16" 5.56 NATO Jester Rail Upper Receiver Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Jester Rail Free Floating MLOK Quad Rail Carbine Length Gas System .750 Ga Block 1/2x28 TPI Thread Pitch A2 Muzzle Device 1:7...
    $209.00 - $229.00
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    $209.00 - $229.00
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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" JESTER UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT - FDE
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    ALWAYS ARMED 16" JESTER UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT - FDE

    Now: $458.00
    Was: $658.00
    Always Armed 16" 5.56 NATO Jester 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: $458.00
    Was: $658.00
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    Now: $458.00
    Was: $658.00
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  • 1:7 TWIST BARREL | 416R STAINLESS STEEL BARREL 15" FREE FLOAT M-LOK HAND GUARD
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    Always Armed 16" Stainless Steel 5.56 Nato Upper Receiver - Blue Titanium

    Now: $209.00
    Was: $349.00
    Always Armed 16" Stainless Steel 5.56 Nato Upper Receiver - Blue Titanium Blue 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...
    Now: $209.00
    Was: $349.00
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    Now: $209.00
    Was: $349.00
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  • Always Armed 18" 5.56 NATO Rifle Length Gen 1 Upper Receiver Always Armed 18" 5.56 NATO Rifle Length Gen 1 Upper Receiver
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    Always Armed 18" 5.56 NATO Rifle Length Gen 1 Upper Receiver

    $189.00 - $219.00
    Always Armed 18" 5.56 NATO Upper Receiver Upper Specifications Mil-Spec Upper Design Machined from 7075-T6 Forging Mil-Spec dust cover and forward assist Made in the USA 15" Free Float OEM Handguard Design Available in Hard Coat Black...
    $189.00 - $219.00
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    $189.00 - $219.00
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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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  • Titanium Cerakote | Mil-Spec Upper Receiver | AR-15 16" 5.56/.223 AR 15 Upper Receiver with 15" M-LOK Hand Guard
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    ALWAYS ARMED LIMITED EDITION 16" 5.56 NATO UPPER WITH STRIKE INDUSTRIES ACCESSORIES - TITANIUM/RED

    $422.85
    Always Armed 16" 5.56 NATO Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 16" 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 System .750...
    $422.85
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    $422.85
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  • ALWAYS ARMED OCT2 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 OCT2 SERIES 16" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $219.00
    Was: $269.00
    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 Carbine Length Gas System ...
    Now: $219.00
    Was: $269.00
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    Now: $219.00
    Was: $269.00
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  • AR15 Rifle Upper Receiver | Chambered in 5.56 NATO | Timber Creek Billet Dust Cover and Forward Assist
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    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER WITH TIMBER CREEK DUST COVER AND FORWARD ASSIST - TITANIUM

    $408.98
    ALWAYS ARMED OCTO SERIES 16" 5.56 NATO UPPER RECEIVER Made in the USA Titanium Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver Timber Creek Outdoors Blue Anodized Billet Dust Cover Timber Creek Outdoors Blue Anodized Forward Assist 15" Free Float...
    $408.98
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    $408.98
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