Ruger AR Lower, Black, Annv Multi Cal

Product Description

The Ruger AR Lower multi-caliber stripped receiver gives you the foundation to build your own AR platform firearm. This is a true multi-caliber lower, meaning it accepts uppers chambered in various calibers without modification. Whether you’re into precision rifle sport or recreational shooting, a stripped lower lets you customize every component to match your exact needs and budget.

As a stripped receiver, this Ruger AR Lower arrives without furniture, stock, or upper receiver. You control the final build—choose your barrel length, handguard style, buttstock, and trigger group. This approach appeals to shooters who want maximum personalization and cost efficiency.

250th Anniversary Edition Design

This limited-edition lower celebrates America’s 250th year of liberty. The left side bears special “Made in the 250th Year of American Liberty” engraving. Black anodized finish provides durable corrosion resistance and a professional appearance on the range or in the field.

AR Platform Compatibility

The Ruger AR Lower uses the proven AR platform action type. Multi-caliber capability means you can pair it with uppers in .223 Remington, 5.56 NATO, .300 Blackout, 6.8 SPC, or other compatible AR calibers. This flexibility makes it ideal for hunters, competition shooters, and enthusiasts building multiple rifles from one platform.

Building your own rifle from a stripped lower is a rewarding project. You’ll gain knowledge of how each component works and develop deeper familiarity with your firearm. Many shooters find the assembly process educational and cost-effective compared to buying a complete rifle.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What calibers can I use with this Ruger AR Lower multi-caliber receiver?

A: This stripped lower accepts any standard AR platform upper receiver, including .223 Remington, 5.56 NATO, .300 Blackout, 6.8 SPC, and other compatible calibers. You pair your choice of multi-caliber upper with this lower to build the rifle you want.

Q: How does shipping work when I order this stripped lower?

A: As a firearm, this Ruger AR Lower ships to your local FFL dealer of your choice. Once your FFL completes the transfer, you take possession of the receiver and can begin your build or have a gunsmith assemble it.

Q: Does this stripped receiver come with a warranty?

A: Yes, Ruger backs all of their firearms with a full manufacturer warranty covering defects in materials and workmanship from the date of purchase.

Q: Is this a good choice for a first-time AR builder?

A: Absolutely. A stripped lower lets you learn every component of the AR platform and customize your build to your exact preferences. Many first-time builders choose this route for the hands-on experience and cost savings.

Additional information