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 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE Burnt Bronze | AR15 Pistol Upper Receiver | 5.56 NATO
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    ALWAYS ARMED 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE

    Now: $229.00
    Was: $319.00
    Always Armed 10.5" 5.56 NATO Flash Can Upper Receiver - Burnt Bronze 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: $229.00
    Was: $319.00
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    Was: $319.00
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  • Always Armed 16" 5.56 Front Sight Upper - Black
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    Always Armed 16" 5.56 Front Sight Upper - Black

    Now: $179.00
    Was: $299.00
    Always Armed 16" 5.56 Front Sight Upper - Black Made in the USA Mil-Spec 7075 T6 5.56 Nato Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine Length...
    Now: $179.00
    Was: $299.00
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    Now: $179.00
    Was: $299.00
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  • ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail AR15 Rifle Upper Receiver
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Black

    Now: $209.00
    Was: $329.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Black Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Hard Coat Black Anodized Finish Carbine Length Gas System .750 Ga Block 1/2x28...
    Now: $209.00
    Was: $329.00
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    Now: $209.00
    Was: $329.00
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  • Always Armed Jester 10.5" Upper Receiver 10.5" 1:7 Twist 5.56 Nato Barrel
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    ALWAYS ARMED Jester 10.5" 5.56 NATO UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    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  10.5" 1:7  Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine...
    Now: $189.00
    Was: $249.00
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    Now: $189.00
    Was: $249.00
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  • ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - BURNT BRONZE Burnt Bronze Cerakoted Mil-Spec AR-15 Upper Receiver with 1:7 Twist Barrel
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Burnt Bronze

    Now: $219.00
    Was: $299.00
    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 15" M-LOK QUAD RAIL - BURNT BRONZE Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Burnt Bronze Cerakote Finish Carbine Length Gas System A2 Muzzle Device 1:7 Twist...
    Now: $219.00
    Was: $299.00
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    Now: $219.00
    Was: $299.00
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  • ALWAYS ARMED 10.5" BLACK 5.56 UPPER WITH 10" FDE TR SERIES HANDRAIL
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    ALWAYS ARMED 10.5" BLACK 5.56 UPPER WITH 10" FDE TR SERIES HANDRAIL

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED 10.5" BLACK 5.56 UPPER WITH 10" FDE TR SERIES 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 10" Free...
    Now: $199.00
    Was: $269.00
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    Now: $199.00
    Was: $269.00
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  • AR15 Rifle Upper Receiver | Chambered in 5.56 NATO
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    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - SMITH & WESSON RED

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - SMITH & WESSON RED Made in the USA Mil-Spec 7075 T6 BX Series Upper Receiver with Dust Cover and Forward Assist 16" 1:7  Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO...
    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 BX SERIES UPPER RECEIVER ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - BLACK
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    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    ALWAYS ARMED 16" 5.56 NATO BX SERIES 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...
    Now: $199.00
    Was: $269.00
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    Now: $199.00
    Was: $269.00
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  • Chambered in 5.56 NATO ALWAYS ARMED 7.5" 5.56 NATO UPPER RECEIVER - BLACK ANODIZED
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    ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL UPPER RECEIVER - BLACK ANODIZED

    Now: $179.00
    Was: $279.00
    ALWAYS ARMED 7.5" 5.56 NATO STAINLESS STEEL 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 Length...
    Now: $179.00
    Was: $279.00
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    Now: $179.00
    Was: $279.00
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  • 16" AR 15 Mil Spec Upper Receiver | 5.56/.223
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    ALWAYS ARMED 16" 5.56 NATO BX SERIES UPPER RECEIVER - TITANIUM

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO BX SERIES 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 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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  • Rose Gold AR15 Rifle Length Upper Receiver
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - PINK CHAMPAGNE

    Now: $199.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER - PINK CHAMPAGNE 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...
    Now: $199.00
    Was: $319.00
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    Now: $199.00
    Was: $319.00
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  • Best Right Handed Flat Dark Earth Upper Receiver Budget Friendly AR 15 Pistol Upper Receiver - Magpul FDE
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    ALWAYS ARMED 10.5" 5.56 NATO TR SERIES UPPER RECEIVER - FDE

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 5.56 NATO TR Series Upper Receiver - FDE 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 10" Free Float M-LOK TR Series Hand Guard...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • ALWAYS ARMED 16" 5.56 NATO Upper Receiver - OD Green 15" free float m-lok rail
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    ALWAYS ARMED 16" 5.56 NATO Upper Receiver - Magpul OD Green

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver - Magpul OD Green Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Rail Finished in Magpul OD Green 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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  • Magpul Flat Dark Earth Pistol Upper Receiver | 5.56 NATO Always Armed 7.5" Flash Can Upper Receiver | M-LOK
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    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER - FDE

    Now: $229.00
    Was: $319.00
    ALWAYS ARMED OCTO SERIES 7.5" 5.56 NATO FLASH CAN UPPER RECEIVER - FDE Made in the USA Mil-Spec 7075 T6 5.56 Nato Flash Can Upper Receiver with Dust Cover and Forward Assist 7.5" 1:7 Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO...
    Now: $229.00
    Was: $319.00
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    Now: $229.00
    Was: $319.00
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  • Magpul Olive Drab Green AR-15 Pistol Flash Can Upper Receiver Grid Defense 10.5" 5.56 NATO Upper Receiver in OD Green Cerakote
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    Grid Defense 10.5" 5.56 Flash Can Upper Receiver - OD Green

    Now: $329.00
    Was: $399.00
    Grid Defense 10.5" 5.56 Flash Can Upper Receiver Finished in OD Green 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...
    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 RECEIVER WITH 12" MLOK RAIL
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    ALWAYS ARMED 10.5" 5.56 NATO UPPER RECEIVER WITH 12" MLOK RAIL & TEQUILA SUNRISE FLASH CAN - BLACK

    Now: $259.00
    Was: $299.00
    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 .750...
    Now: $259.00
    Was: $299.00
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    Now: $259.00
    Was: $299.00
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  • 5.56 NATO Upper Receiver with 12" M-Lok Hand Guard
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    ALWAYS ARMED 16" 5.56 NATO UPPER RECEIVER WITH 12" M-LOK - BURNT BRONZE

    Now: $229.00
    Was: $319.00
    Always Armed 16" 5.56 NATO Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 5.56 Nato Flash Can Upper Receiver with Dust Cover and Forward Assist 16" 1:7  Twist 4150 Barrel with Black Nitride Finish Chambered in 5.56 NATO Carbine...
    Now: $229.00
    Was: $319.00
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    Now: $229.00
    Was: $319.00
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  • ALWAYS ARMED OCTO SERIES 10.5" 5.56 UPPER RECEIVER - FDE best 10.5" 5.56 Upper receiver for any ar15 build
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    ALWAYS ARMED OCTO SERIES 10.5" 5.56 UPPER RECEIVER - FDE

    Now: $209.00
    Was: $299.00
    ALWAYS ARMED OCTO SERIES 10.5" 5.56 UPPER RECEIVER - FDE Made in the USA Magpul FDE Cerakote Finish Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5" 1:7 Twist Barrel with Black Nitride...
    Now: $209.00
    Was: $299.00
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    Now: $209.00
    Was: $299.00
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  • 12" tr series free float m-lok handguard 10.5" 1:7 twist barrel
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    ALWAYS ARMED TR SERIES 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE

    Now: $229.00
    Was: $319.00
    ALWAYS ARMED TR SERIES 10.5" 5.56 NATO FLASH CAN UPPER RECEIVER - BURNT BRONZE 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: $229.00
    Was: $319.00
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    Now: $229.00
    Was: $319.00
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  • ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Titanium Shop this quad rail upper receiver to fit all your attachments for any need
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    ALWAYS ARMED 16" 5.56 NATO Quad Rail Upper Receiver - Titanium

    Now: $219.00
    Was: $319.00
    ALWAYS ARMED 16" 5.56 NATO Upper Receiver with 15" M-LOK Quad Rail - Titanium Made in the USA 16" 4150 Barrel Chambered in 5.56 NATO 15" Free Floating MLOK Quad Rail Finished in Titanium Cerakote Carbine Length Gas System .750 Gas Block A2 Muzzle Device...
    Now: $219.00
    Was: $319.00
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    Now: $219.00
    Was: $319.00
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