Ruger 8506 Ar-15 Lower Receiver Multi-Caliber 5.56 Nato .223 Hardcoat Anodized

The Ruger 8506 AR Lower Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized is a stripped AR-15 lower built for builders and shooters who want a durable foundation for 5.56 NATO/.223 semi-automatic rifle projects, and yes, this listing is for a lower receiver only and requires an FFL transfer. This Ruger lower is crafted from aircraft-grade 7075-T6 aluminum with a black hardcoat anodized finish, giving you the strength and corrosion resistance needed for rough use at the range, in competition, or on hunting builds where reliability matters; the 8506 series from Ruger is engineered to accept standard AR components and ergonomics, making parts compatibility and customization straightforward for gunsmiths and DIY assemblers. If you're putting together a multi-caliber AR platform or replacing a worn lower, the precision machining and standard AR-15 geometry preserve trigger fit, buffer tube alignment, and magazine compatibility while providing a solid mounting point for stocks, grips, and controls. Keep in mind federal transfer requirements: an FFL is required to receive this firearm component. This product suits builders, armorers, and shooters searching for a Ruger AR lower receiver that balances strength, serviceability, and long-term performance.