Ruger AR-556 Stripped Lower Receiver – AR-15 Platform | .223 Rem / 5.56 NATO Compatible

Build your AR with confidence using the Ruger AR-556 Stripped Lower Receiver, a high-quality foundation from one of the most trusted names in American firearms. Precision-machined from 7075-T6 aluminum, this AR-15 lower is mil-spec and multi-caliber compatible, ideal for .223 Remington and 5.56x45mm NATO builds.

Featuring a hardcoat anodized black finish for durability and corrosion resistance, this stripped lower is perfect for builders seeking reliability, compatibility, and factory-grade craftsmanship. Whether you’re completing a custom build or replacing a worn component, Ruger’s stripped lower provides an exact fit and long-lasting performance.

Ruger AR-556 Stripped AR-15 Lower Receiver – .223/5.56 | Mil-Spec Fit & Finish

Start your next AR build with confidence using the Ruger AR-556 Stripped AR-15 Lower Receiver, precision-machined for .223/5.56 platforms. Made from high-strength 7075-T6 forged aluminum, this Mil-Spec lower delivers a rock-solid foundation with Ruger’s trusted reliability. Compatible with all standard AR-15 parts and uppers, it’s the ideal choice for a custom or duty-grade build….

✅ Key Features of Ruger AR-556 Stripped Lower Receiver – AR-15 Platform | .223 Rem / 5.56 NATO Compatible:

• Ruger Factory AR-556 Lower – Trusted quality for your AR build

• Mil-Spec Design – Compatible with most standard AR-15 parts and uppers

• 7075-T6 Forged Aluminum – Lightweight and exceptionally durable

• Hardcoat Black Anodized Finish – Wear-resistant and corrosion-resistant

• Multi-Caliber Marked – Ideal for .223 Remington & 5.56 NATO configurations

• Stripped Configuration – Perfect for custom fire control group installations

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