The Ruger Mini-14 .223 20-round magazine is a factory-made magazine designed for use with the Ruger Mini-14 rifle chambered in .223 Remington or 5.56x45mm NATO. Here are some key details about this magazine:

1. Caliber Compatibility: The magazine is designed for use with firearms chambered in .223 Remington or 5.56x45mm NATO, which are popular calibers for semi-automatic rifles like the Ruger Mini-14.
2. Capacity: The magazine has a capacity of 20 rounds. This provides the Ruger Mini-14 with an increased ammunition capacity compared to the standard 5 or 10-round magazines, allowing for more shots before reloading.
3. Construction: Factory magazines from Ruger are known for their quality construction. They are typically made with a durable steel magazine body and a polymer or steel baseplate for reliable feeding and longevity.
4. Compatibility: The magazine is designed specifically for use with the Ruger Mini-14 rifle chambered in .223 Remington or 5.56x45mm NATO. It may not be compatible with other firearms or those chambered in different calibers.
5. Availability: Factory magazines for Ruger rifles are generally available through reputable firearms retailers or distributors that specialize in Ruger firearms and accessories.
6. Legal Considerations: Always be aware of and comply with local, state, and federal laws and regulations regarding magazine capacity and firearm ownership. Magazine capacity restrictions can vary by location, so it’s essential to understand and adhere to local laws.

The Ruger Mini-14 is a popular semi-automatic rifle known for its reliability and versatility. Having factory magazines with a capacity of 20 rounds provides users with a reliable and convenient option for various shooting applications, including sport shooting, hunting, and self-defense.