The Ruger Stripped AR-15 Upper Receiver (Ruger part no. 91004) gives builders a genuine, factory-made foundation for an AR-15 project rifle. Manufactured by Ruger, this upper ships bare so you can add the bolt carrier group, charging handle, and barrel of your choice. It is built to standard AR-15 receiver dimensions, so mil-spec components fit without modification. Whether you are building a first rifle or assembling a custom configuration, this receiver gives you full control over the parts that go into it.

Key Specifications

• Genuine Ruger-made stripped upper receiver for AR-15 pattern rifles.
• Ships stripped/bare, giving builders a clean canvas to add their own bolt carrier group, barrel, and handguard.
• Built to standard AR-15 receiver dimensions for compatibility with mil-spec components.
• Machined to accept a standard AR-15 forward assist and dust cover if the builder chooses to add them.
• Uses standard AR-15 takedown pin dimensions for mating to any mil-spec lower receiver.

Frequently Asked Questions

Does this upper receiver include internal parts? No, it ships stripped so you can install your own bolt carrier group, charging handle, and barrel.

Will standard AR-15 parts fit this receiver? Yes, it is built to standard AR-15 receiver dimensions for compatibility with mil-spec components.

Buy the Ruger Stripped AR-15 Upper Receiver

Start your next AR-15 build with a genuine Ruger stripped upper. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and see our full AR-15 upper selection for more build options.