Ruger AR-556 Complete Lower Receiver for AR-15 Platform Rifles

The Ruger AR-556 Complete Lower Receiver is the serialized lower receiver assembly used as the foundation for a compatible AR-15 rifle build. It houses the fire control group, magazine well, safety selector, grip, buffer system, and stock attachment point, making it the main controlled component of an AR-platform firearm.

Designed for AR-15 platform compatibility, this Ruger complete lower is a practical choice for builders who want a factory Ruger lower receiver assembly for a custom rifle project, replacement build, or spare lower setup. It provides a ready foundation for pairing with a compatible AR-15 upper receiver assembly.

Whether used for a new build or as a replacement lower assembly, the Ruger AR-556 Complete Lower Receiver gives shooters a reliable starting point from a trusted firearm manufacturer. Its AR-style layout supports familiar controls, broad parts compatibility, and flexible configuration options.

Specifications

• Manufacturer: Ruger
• Model: AR-556 Complete Lower Receiver
• MPN: 28501
• UPC: 736676285013
• Product Type: Complete Lower Receiver
• Platform: AR-15 / AR-Style Rifles
• Configuration: Complete Lower Assembly
• Application: AR-15 Rifle Build, Repair, or Replacement Lower
• Compatibility: Compatible AR-15 upper receiver assemblies
• Manufacturer Listing: AR-LOWER-C AR Lower

Features

• Factory Ruger lower receiver assembly for AR-platform builds
• Complete lower configuration helps simplify rifle assembly
• Designed to pair with compatible AR-15 upper receiver assemblies
• Provides the serialized foundation for an AR-style firearm build
• Supports familiar AR-15 controls and handling characteristics
• Useful for custom builds, replacement projects, and spare lower setups
• Manufactured by Ruger for dependable fit and quality

Benefits

• Provides a convenient starting point for building a compatible AR-15 rifle
• Reduces the need to source individual lower receiver components separately
• Offers factory Ruger quality for shooters and builders
• Allows customization through the choice of compatible upper receiver assemblies
• Useful for maintaining a spare lower receiver setup for future builds
• Ideal for AR owners, builders, and armorers who want a complete lower assembly

The Ruger AR-556 Complete Lower Receiver is a dependable choice for shooters looking to build, repair, or configure a compatible AR-15 platform rifle. With factory Ruger quality and complete lower receiver convenience, it provides a solid foundation for a wide range of AR-style firearm projects.