The Glock 23 .40 S&W 13-round magazine is a factory-made magazine designed for use with the Glock 23 pistol chambered in .40 Smith & Wesson (also known as .40 S&W). Here are some key details about this magazine:

1. Caliber Compatibility: The magazine is specifically designed for use with the Glock 23 pistol, which is chambered in .40 Smith & Wesson. This caliber is known for its versatility and is used by many law enforcement agencies and civilian shooters.
2. Capacity: The magazine has a standard capacity of 13 rounds. This is the standard capacity for Glock 23 pistols and is commonly used for concealed carry, duty use, and general shooting purposes.
3. Construction: Glock factory magazines are known for their durability and reliability. They are typically made from a combination of polymer for the magazine body and a steel spring for reliable feeding.
4. Compatibility: The magazine is designed specifically for the Glock 23 pistol. It may not be compatible with other Glock models chambered in different calibers.
5. Availability: Factory magazines for Glock pistols 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 23 is a popular choice among shooters for its compact size, reliability, and versatility. The availability of factory magazines with standard capacities, such as this 13-round magazine, allows shooters to use their Glock 23 for concealed carry, duty use, and general shooting with the standard capacity magazine that the pistol was designed for.