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

  • Upper Assembly /16" 9mm /1:10/M-Lock/160-053, black firearm upper assembly with M-Lock rail system and detailed component design.

    Upper Assembly /16" 9mm /1:10/M-Lock/160-053

    This AR-15 upper assembly is made from the highest quality parts and is assembled in Charleston, South Carolina. The 15" M-LOK design is one of our most popular handguard/rail designs. Features: 7075-T6 Aluminum Mil-Spec Anodized Receiver 16" 9mm Barrel...

    Was: $419.00
    On Sale $269.00
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  • AR15 Pistol Upper / 5" 5.56 Nato / 1:5 / 160-819 Robins-Egg

    AR15 Pistol Upper / 5" 5.56 Nato / 1:5 / 160-819 Robins-Egg

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 5 5.56 Nato / 1:5 / 160-819 Robins Egg. This premium upper assembly is designed for optimal performance and durability. The 5 barrel is chambered in 5.56 Nato with a 1:5 twist rate, ensuring...

    Was: $339.00
    On Sale $239.00
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  • AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-820

    AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-820

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 5 5.56 Nato / 1:5 / 160-820. This premium upper assembly is designed for optimal performance and durability. The 5 Inch barrel is chambered in 5.56 Nato with a 1:5 twist rate, ensuring...

    $319.00 - $400.00
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  • AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 ODG

    AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 ODG

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 5 5.56 Nato / 1:5 / 160-819 Blue. This premium upper assembly is designed for optimal performance and durability. The 5 barrel is chambered in 5.56 Nato with a 1:5 twist rate, ensuring...

    Was: $339.00
    On Sale $239.00
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  • AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 Red

    AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 Red

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 5 5.56 Nato / 1:5 / 160-819 Red. This premium upper assembly is designed for optimal performance and durability. The 5 barrel is chambered in 5.56 Nato with a 1:5 twist rate, ensuring...

    Was: $339.00
    On Sale $239.00
    Add to Cart
  • AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 Pink

    AR15 Pistol Upper Assembly / 5" 5.56 Nato / 1:5 / 160-819 Pink

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 5 5.56 Nato / 1:5 / 160-819 Blue. This premium upper assembly is designed for optimal performance and durability. The 5 barrel is chambered in 5.56 Nato with a 1:5 twist rate, ensuring...

    Was: $339.00
    On Sale $239.00
    Add to Cart
  • Upper Mystery Box

    Upper Mystery Box

    Unveil the ultimate thrill with our Upper Assembly Mystery Box! Packed with premium treasures, this curated collection elevates the mystery experience. Expect higher-value items, exclusive finds, and a touch of luxury in every unboxing. Perfect for...

    $149.00
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