Ruger AR-556 Stripped AR-15 Lower Receiver

This Ruger stripped AR-15 lower receiver (brand part no. 28501) is the serialized firearm frame for anyone building or upgrading an AR-platform rifle to their own specification. Machined by Ruger to standard AR-15 mil-spec dimensions, it accepts standard AR-15 lower parts kits, buffer tubes and stocks, along with any mil-spec upper receiver assembly. Starting from a stripped lower gives a builder full control over trigger, grip, stock and upper configuration rather than settling for a factory-set combination. Backed by Ruger’s manufacturing standards, this lower is a solid foundation for a custom home-defense, range or hunting AR build.

Key Specifications

• Stripped AR-15 lower receiver the serialized firearm requiring standard AR-15 lower parts and an upper assembly to complete.
• Forged aluminum construction for a durable, mil-spec-dimensioned receiver.
• Standard AR-15 mil-spec dimensions compatible with standard lower parts kits, buffer tubes and stocks.
• Accepts any mil-spec AR-15 upper receiver giving builders full control over caliber and configuration.
• Ruger manufacturing quality backing a receiver built to be the foundation of a long-term custom rifle.

Frequently Asked Questions

Does this lower come with any internal parts? No, it ships stripped and requires a lower parts kit, buffer tube, stock and upper receiver assembly to complete.

Is it compatible with standard AR-15 parts? Yes, it is machined to standard mil-spec AR-15 dimensions and accepts standard lower parts kits and upper assemblies.

What is this receiver used for? It serves as the serialized firearm frame for building a custom AR-15 pattern rifle to the buyer’s own specification.

Buy the Ruger AR-15 Stripped Lower Receiver

Order the Ruger stripped AR-15 lower receiver from our Lubbock, Texas gun shop for fast, insured shipping to your FFL. It is the ideal starting point for a fully custom build, letting you choose every component from the trigger to the upper. Our Lubbock, Texas team can help source the parts kit and upper to complete your build. See more from Ruger or browse our full AR-15 lower receivers selection.