300BLK Uppers

300BLK Uppers

Enhance your AR-15 with premium 300 Blackout upper receivers from Always Armed. Designed for superior performance in rifle and pistol builds, our 300BLK uppers are ideal for subsonic and suppressed shooting. Choose from a variety of Cerakote finishes, barrel lengths, and configurations to match your tactical or custom build. Easy to install, reliable, and ready for the range or field.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • Always Armed 10.5" 300 Blackout Upper Receiver - Black Milspec AR-15 10.5" Always Armed Upper with 1:8 Twist
    Choose Options
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - BLACK ANODIZED

    Now: $179.00
    Was: $249.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $179.00
    Was: $249.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $179.00
    Was: $249.00
    Subtotal:
    Choose Options
  • Always Armed 16" 1:8 Twist 300 Blackout Upper Receiver - Black AR15 Always Armed Upper with 1:8 Twist Barrel
    Choose Options
    Quick view

    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $199.00
    Was: $269.00
    Always Armed 16" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System .750...
    Now: $199.00
    Was: $269.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $199.00
    Was: $269.00
    Subtotal:
    Choose Options
  • AR-15 Always Armed 16" 300 Blackout Upper Receiver - Magpul FDE 16" .300 Blackout Rifle Upper Receiver - Flat Dark Earth Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...
    Now: $219.00
    Was: $319.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $219.00
    Was: $319.00
    Subtotal:
    Choose Options
  • Always Armed Magpul Flat Dark Earth 10.5" 300 Blackout Upper Receiver 10.5" Pistol Upper Receiver Chambered in .300 AAC - FDE Cerakote Finish
    Choose Options
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • Always Armed 10.5" 300 Blackout 1:8 Twist Upper Receiver 10.5" Pistol .300 Upper Receiver with 10" Rail - Burnt Bronze Cerakote
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $209.00
    Was: $299.00
    Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
  • Always Armed 7.5" 300 Blackout Upper Receiver - Black Anodized AR-15 Always Armed 7.5" Upper with 1:8 Twist 4150 Steel Barrel
    Choose Options
    Quick view

    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Black Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $189.00
    Was: $249.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $189.00
    Was: $249.00
    Subtotal:
    Choose Options
  • Always Armed 7.5" 300 Blackout AR15 Upper Receiver - Magpul FDE Milspec Pistol Upper Receiver Chambered in .300 Blackout - Flat Dark Earth
    Choose Options
    Quick view

    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - MAGPUL FDE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Magpul FDE Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • Burnt Bronze Always Armed 7.5" 300 Blackout 1:8 Twist Upper Receiver 7.5" Pistol Upper Receiver Chambered in 762x35 - Burnt Bronze Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist 7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System .750...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • Always Armed AR15 16" 300 Blackout Upper Receiver with 15" Rail 16" .300 Blackout Rifle Upper Receiver - Burnt Bronze Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BURNT BRONZE

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Burnt Bronze Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...
    Now: $219.00
    Was: $319.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $219.00
    Was: $319.00
    Subtotal:
    Choose Options
  • Always Armed 10.5" 300 Blackout Upper Receiver - Black Milspec AR-15 10.5" Always Armed Upper with 1:8 Twist
    Choose Options
    Quick view

    ALWAYS ARMED OCTO SERIES 10.5" 300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK ANODIZED

    Now: $219.00
    Was: $279.00
    ALWAYS ARMED OCTO SERIES 10.5" 300 BLACKOUT FLASH CAN UPPER RECEIVER - BLACK ANODIZED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300...
    Now: $219.00
    Was: $279.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $219.00
    Was: $279.00
    Subtotal:
    Choose Options
  • Always Armed 10.5" 300 Blackout Upper Receiver with M-Lok Hand Guard Mil-Spec 10.5" .300 Blackout Pistol Upper Receiver - Titanium Cerakote Finish
    Choose Options
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - TITANIUM

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • Always Armed 16" 300 Blackout Upper Receiver with MLOK Rail Titanium Cerakoted 16" .300 Blackout Rifle Upper - Always Armed
    Choose Options
    Quick view

    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - TITANIUM

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System .750...
    Now: $219.00
    Was: $319.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $219.00
    Was: $319.00
    Subtotal:
    Choose Options
  • Always Armed 7.5" 300 Blackout Upper Receiver with 7" MLOK Hand Guard 7.5" 1:8 Twist 300 Blackout Upper - Smith & Wesson Red Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • OCTO Series AR 15 Pistol Upper | Milspec Dust Cover and Forward Assist free float 9.25" M-LOK Hand rail
    Choose Options
    Quick view

    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BLACK

    Now: $189.00
    Was: $249.00
    ALWAYS ARMED OCTO SERIES 10.5" .300 BLACKOUT UPPER RECEIVER - BLACK Made in the USA Mil-Spec AR15 7075 T6 Upper Receiver with Dust Cover and Forward Assist 9.25" Free Float M-LOK OCTO Series Rail 10.5" 1:8 Twist Barrel with Black Nitride Finish A2...
    Now: $189.00
    Was: $249.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $189.00
    Was: $249.00
    Subtotal:
    Choose Options
  • Always Armed Mil-Spec 7.5" 300 Blackout Upper Receiver with MLOK Hand Guard AR15 Pistol Upper Receiver Chambered in .300 Blackout - Titanium Cerakote Finish
    Choose Options
    Quick view

    ALWAYS ARMED 7.5" 300 BLACKOUT UPPER RECEIVER - TITANIUM

    Now: $209.00
    Was: $299.00
    Always Armed 7.5" 300 Blackout Upper Receiver - Titanium Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  7.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas System ...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • Always Armed 10.5" .300 Blackout Upper Receiver with 10" Rail AR-15 10.5" 300 Blackout Pistol Upper Receiver - Smith & Wesson Red
    Choose Options
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - SMITH & WESSON RED

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Smith & Wesson Red Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • ALWAYS ARMED 16" UPPER RECEIVER COMBO DEAL .300 BLACKOUT RIFLE UPPER RECEIVER - M4
    Choose Options
    Quick view

    ALWAYS ARMED 16" UPPER RECEIVER COMBO DEAL - 5.56 NATO/.300 BLACKOUT

    Now: $399.00
    Was: $538.00
    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 .750...
    Now: $399.00
    Was: $538.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $399.00
    Was: $538.00
    Subtotal:
    Choose Options
  • Always Armed 16" 300 Blackout Upper Receiver with 15" Free Float Rail 16" .300 Blackout Rifle Upper Receiver - Bazooka Green Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 16" 300 BLACKOUT UPPER RECEIVER - BAZOOKA GREEN

    Now: $219.00
    Was: $319.00
    Always Armed 16" 300 Blackout Upper Receiver - Bazooka Green Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  16" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $219.00
    Was: $319.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $219.00
    Was: $319.00
    Subtotal:
    Choose Options
  • Always Armed 10.5" 300 Blackout Upper Receiver with Free Float Hand Guard Mil-Spec 10.5" Upper Receiver Chambered in .300 Blackout - Ridgeway Blue Cerakote
    Choose Options
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - RIDGEWAY BLUE

    Now: $209.00
    Was: $299.00
    Always Armed 10.5" 300 Blackout Upper Receiver - Ridgeway Blue Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 4150 Barrel with Black Nitride Finish Chambered in .300 Blackout Pistol Length Gas...
    Now: $209.00
    Was: $299.00
    Choose Options Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $209.00
    Was: $299.00
    Subtotal:
    Choose Options
  • ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER - STAINLESS STEEL
    Quick view

    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLEMISHED

    $279.00
    ALWAYS ARMED 10.5" 300 BLACKOUT UPPER RECEIVER WITH STAINLESS STEEL BARREL - BLEMISHED Made in the USA Mil-Spec 7075 T6 Upper Receiver with Dust Cover and Forward Assist  10.5" 1:8 Twist 416R Stainless Steel Barrel Chambered in .300 Blackout Pistol...
    $279.00
    Quick view
    Qty in Cart: 0
    Quantity:
    Price:
    $279.00
    Subtotal:
  • Total: items /

Adding your products to cart

View Cart Continue Shopping