Ruger AR-15 5.56 NATO Complete Lower Receiver

The Ruger AR-15 Complete Lower Receiver is a serialized, mil-spec foundation ready to host a complete AR-15 upper. Chambered for 5.56 NATO, it accepts the broad ecosystem of AR-15 barrels, bolt carrier groups, and uppers for sport, hunting, defensive, or duty builds.

The receiver is precision-machined from 7075-T6 forged aluminum to mil-spec tolerances, delivering the strength, dimensional consistency, and reliability needed for long service life. A black hardcoat anodized finish protects against corrosion and wear while preserving the classic AR-15 profile.

As a complete lower, this unit ships with the lower parts kit installed - including the trigger group, hammer, safety selector, springs, detents, and pins - along with a pistol grip and a collapsible stock on a mil-spec buffer tube. Overall length runs 15.63 in collapsed to 19 in extended.

This is a serialized receiver sold on its own and is not a complete firearm. A magazine is not included. Manufactured in the USA by Ruger.

DISCLAIMER: Firearms and receivers are subject to state-specific shipping restrictions and must be transferred through a valid FFL dealer. Please visit our shipping restrictions page to review all applicable restrictions for your state. Subject to change.