Uppers

Uppers, also known as upper receivers, are a significant component of AR-15 rifles. They attach to the lower receiver and house the bolt carrier group, barrel, and other crucial parts of the firearm. As a crucial part of the AR-15 platform, uppers play a vital role in determining the rifle's performance and capabilities. AR15-Overstock.com offers a wide selection of AR-15 upper receivers, including complete uppers, stripped uppers, and individual upper parts. From different calibers and barrel lengths to various handguard options, finding the right upper for your AR-15 build is crucial for achieving your desired shooting experience.

AR15-Upper Receivers - AR15-Overstock.com

  • AR15 Pistol Upper Assembly, 5-inch 7.62x39, anodized red finish, with charging handle and muzzle brake

    AR15 Pistol Upper Assembly / 5" 7.62x39 / ANODIZED RED

    Enhance your AR-15 pistol with the AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / Red. Built for performance and durability, this compact upper is ideal for shooters looking for a powerful, space-saving setup. Featuring a 5" barrel chambered in 7.62x39...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 7.62x39, anodized purple finish with included purple handguard and muzzle device.

    AR15 Pistol Upper Assembly / 5" 7.62x39 / ANODIZED PURPLE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / Purple. This compact upper features a 5" barrel with a 1:5 twist rate for reliable performance in micro setups. Finished in a bold purple color, it adds standout style to your...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 7.62x39, Anodized Bronze, with barrel, handguard, and muzzle device.

    AR15 Pistol Upper Assembly / 5" 7.62x39 / ANODIZED BRONZE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / Iodized Bronze. This compact upper is built for reliable performance in micro AR pistol setups. Featuring a 5" barrel chambered in 7.62x39 with a 1:5 twist rate, it delivers...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly / 5" 7.62x39 / ANODIZED BLUE, firearm upper receiver with blue anodized finish and parts.

    AR15 Pistol Upper Assembly / 5" 7.62x39 / ANODIZED BLUE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / Iodized Blue. This compact upper is built for reliable performance in micro AR pistol setups. Featuring a 5" barrel chambered in 7.62x39 with a 1:5 twist rate, it delivers...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 300 AAC, anodized red finish, with charging handle and muzzle brake

    AR15 Pistol Upper Assembly / 5" 300 AAC / ANODIZED RED

    Enhance your AR-15 pistol with the AR15 Pistol Upper Assembly / 5" 300 AAC / 1:5 / Red. Built for performance and durability, this compact upper is ideal for shooters looking for a powerful, space-saving setup. Featuring a 5" barrel chambered in 300 AAC...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 300 AAC, anodized purple finish with included purple handguard and muzzle device.

    AR15 Pistol Upper Assembly / 5" 300 AAC / ANODIZED PURPLE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 300 AAC / 1:5 / Purple. This compact upper features a 5" barrel with a 1:5 twist rate for reliable performance in micro setups. Finished in a bold purple color, it adds standout style to your...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 300 AAC, Anodized Bronze, with barrel, handguard, and muzzle device.

    AR15 Pistol Upper Assembly / 5" 300 AAC / ANODIZED BRONZE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 300 AAC / 1:5 / Iodized Bronze. This compact upper is built for reliable performance in micro AR pistol setups. Featuring a 5" barrel chambered in 300 AAC with a 1:5 twist rate, it delivers...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly / 5" 300 AAC / ANODIZED BLUE, firearm upper receiver with blue anodized finish and parts.

    AR15 Pistol Upper Assembly / 5" 300 AAC / ANODIZED BLUE

    Upgrade your build with the AR15 Pistol Upper Assembly / 5" 300 AAC / 1:5 / Iodized Blue. This compact upper is built for reliable performance in micro AR pistol setups. Featuring a 5" barrel chambered in 300 AAC with a 1:5 twist rate, it delivers...

    Was: $389.00
    On Sale $240.00
    Add to Cart
  • AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / 160-819, black firearm upper receiver with warning label, designed for tactical use and firearm customization.

    AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:5 / 160-819 Beware

    This MICRO AR15 upper receiver assembly comes ready to attach to any Mil-Spec lower receiver. The receiver is a flat top M4 forged Mil-Spec upper receiver that is CNC Machined from 7075-T6 aluminum – the hardest and most durable material of any...

    Was: $359.00
    On Sale $219.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 7.5 inch 5.56 Nato, Anodized Bronze finish with handguard and bolt carrier group.

    AR15 Pistol Upper Assembly / 7.5" 5.56 Nato / ANODIZED BRONZE

    The AR15 Pistol Upper Assembly / 7.5" 5.56 NATO / Anodized Bronze delivers compact performance with standout style. Built for reliability and durability, this upper features a 7.5-inch 5.56 NATO barrel paired with a lightweight M-LOK handguard finished...

    Was: $389.00
    On Sale $269.99
    Add to Cart
  • AR15 Pistol Upper Assembly, 7.5 inch 5.56 Nato, anodized red color with black and red components, including a handguard and muzzle brake.

    AR15 Pistol Upper Assembly / 7.5" 5.56 Nato / ANODIZED RED

    The AR15 Pistol Upper Assembly / 7.5" 5.56 NATO / Anodized Red delivers compact performance with standout style. Built for reliability and durability, this upper features a 7.5-inch 5.56 NATO barrel paired with a lightweight M-LOK handguard finished in...

    Was: $389.00
    On Sale $269.99
    Add to Cart
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