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, 7.5 inch 5.56 Nato, 1:5 twist, silver finish, firearm accessory with handguard and barrel.

    AR15 Pistol Upper Assembly / 7.5" 5.56 Nato / 1:5 / 160-829 Silver

    Enhance your AR15 pistol with the AR15 Pistol Upper Assembly / 7.5" 5.56 Nato / 1:7 / 160-829 Silver. This premium upper assembly is designed for optimal performance and durability. The 7.5 barrel is chambered in 5.56 Nato with a 1:7 twist rate, ensuring...

    Was: $399.00
    On Sale $249.00
  • AR10 20" 6.5 Creedmoor rifle upper receiver without handguard, model 160-083.

    AR10 20" 6.5 creedmore without handguard 160-083

    The 20" 6.5 Creedmore Upper – Without Handguard is designed for shooters who want long‑range performance with the flexibility to customize their AR‑10/LR‑308 build. Featuring a 20‑inch barrel chambered in 6.5 Creedmore, this upper delivers...

    Was: $299.00
    On Sale $129.00
    Add to Cart
  • AR10 18-inch .308 firearm barrel, without handguard or gas assembly, model 160-082.

    AR10 18" .308 without handguard or gas assembly 160-082

    The 18" .308 Upper – Without Handguard or Gas Assembly is built for shooters and builders who want a customizable foundation for a full-length AR-10/LR-308 rifle. Featuring an 18-inch barrel chambered in .308 Winchester / 7.62x51 NATO, this upper...

    Was: $299.00
    On Sale $129.00
  • AR10 22" 6.5 Creedmoor without handguard, firearm barrel, model number 160-080.

    AR10 22" 6.5 creedmore without handguard 160-080

    The 22" 6.5 Creedmoor Upper – Without Handguard is designed for precision shooters and builders looking to customize their long-range AR-10/LR-308 platform. Featuring a 22-inch barrel chambered in 6.5 Creedmoor, this upper delivers excellent...

    Was: $299.00
    On Sale $129.00
    Add to Cart
  • AR10 12.5" stainless steel .308 upper without handguard, model 160-079, firearm component.

    AR10 12.5" stainless steel .308 upper without handguard 160-079

    The 12.5" Stainless Steel .308 Upper – Without Handguard is an excellent foundation for builders who want full control over their AR-10/LR-308 setup. Featuring a 12.5-inch stainless steel barrel, this upper delivers durability, corrosion...

    Was: $299.00
    On Sale $129.00
  • AR10 12.5" stainless steel .308 upper, product 160-078, shown from a top view.

    AR10 12.5" stainless steel .308 upper 160-078

    The 12.5" Stainless Steel .308 Upper is built for shooters who want maximum performance in a compact, hard-hitting AR-10/LR-308 platform. Featuring a precision 12.5-inch stainless steel barrel, this upper delivers excellent durability, corrosion...

    Was: $399.00
    On Sale $229.00
  • AR15 Upper Assembly / 24" 224 Valkyrie, black firearm upper receiver with barrel, handguard, and muzzle device.

    AR15 Upper Assembly / 24" 224 Valkyrie 160-076

    Built for long-range precision, this AR-15 upper assembly features a 24" barrel chambered in .224 Valkyrie, delivering exceptional velocity, flat trajectory, and extended-range performance. Designed for shooters who demand accuracy at distance, this...

    Was: $599.00
    On Sale $309.00
    Add to Cart
  • AR15 Upper Assembly / 18" 6.5 Grendel 160-075, black tactical upper with handguard and barrel for rifle customization.

    AR15 Upper Assembly / 18" 6.5 Grendel 160-075

    This AR-15 upper assembly is designed to deliver enhanced accuracy and ballistic performance with the powerful 6.5 Grendel platform. Featuring a 18" barrel, it provides an excellent balance of velocity, range, and handling, making it suitable for both...

    Was: $499.00
    On Sale $209.00
    Add to Cart
  • Stainless Steel Upper Assembly /16" 223 Wylde, firearm upper receiver with a black and colorful artistic finish, featuring a modern and lightweight design for AR-15 rifles.

    Stainless Steel Upper Assembly /16" 223 Wylde 160-074

    This stainless steel upper assembly is built for shooters who demand reliability, durability, and consistent performance. Featuring a 16" .223 Wylde barrel, it offers the versatility to safely fire both .223 Remington and 5.56 NATO ammunition while...

    Was: $599.00
    On Sale $309.00
    Add to Cart
  • AR15 Pistol Upper Assembly, 5-inch 7.62x39 caliber, with 1:10 twist rate, model 160-819, black metallic finish, includes barrel and handguard

    AR15 Pistol Upper Assembly / 5" 7.62x39 / 1:10 / 160-819

    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
!