The Glock 26 Gen 4 9mm 10-round magazine is a factory-made magazine designed specifically for use with the Glock 26 Gen 4 pistol chambered in 9mm Parabellum (9x19mm). Here are some key details about this magazine:

1. Caliber Compatibility: The magazine is designed for use with the Glock 26 Gen 4, which is chambered in 9mm Parabellum. This caliber is one of the most popular and widely used pistol calibers worldwide.
2. Capacity: The magazine has a standard capacity of 10 rounds. This capacity is in compliance with various state and local regulations in the United States, where restrictions on magazine capacity may apply.
3. Construction: Glock factory magazines are known for their durability and reliability. They typically consist of a polymer magazine body and a steel spring, ensuring consistent feeding and longevity.
4. Compatibility: The magazine is designed specifically for the Glock 26 Gen 4. While other Glock 9mm magazines may physically fit the pistol, the 10-round magazine is the standard capacity magazine for this model.
5. Availability: Factory magazines for Glock pistols, including the Glock 26 Gen 4, are generally widely available through firearm and accessories retailers or online vendors that specialize in firearms and firearm 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 Glock 26 Gen 4 is a popular choice for concealed carry due to its compact size and reliability. The 10-round magazine, designed for compliance with capacity restrictions, allows users in certain regions to carry the pistol while adhering to local laws.