The Kel-Tec Sub 2000 Gen 2 9mm is a semi-automatic pistol caliber carbine (PCC) manufactured by Kel-Tec CNC Industries Inc. It is a compact and lightweight firearm designed for easy transport and versatility. Here are some key features and specifications of the Kel-Tec Sub 2000 Gen 2 9mm:

1. Caliber: 9mm
2. Magazine Compatibility: The Sub 2000 Gen 2 9mm is designed to accept various pistol magazines depending on the specific model. Common magazine options include Glock 17, Glock 19, Smith & Wesson M&P, and SIG Sauer P226. This allows users to use the same magazines as their corresponding pistol models.
3. Folding Design: One of the distinctive features of the Sub 2000 Gen 2 is its folding design. The firearm can be folded at the hinge point, reducing its overall length for convenient storage and transport. When folded, it becomes a compact package that is easy to carry or fit in a backpack.
4. Barrel Length: The barrel length of the Sub 2000 Gen 2 9mm is typically around 16.25 inches.
5. Capacity: The standard magazine capacity varies depending on the magazine used. It can range from 10 to 33 rounds, depending on the model and compatibility with different pistol magazines.
6. Construction: The Sub 2000 Gen 2 features a polymer frame, which helps keep the weight low. The upper receiver is made of steel, providing durability and rigidity.
7. Sights: The Sub 2000 Gen 2 usually comes with adjustable sights, including a rear aperture sight and a front post sight. Some models may also have accessory rails for attaching optics or additional sights.
8. Controls: The Sub 2000 Gen 2 has an ambidextrous safety and a push-bolt magazine release, making it user-friendly for both right-handed and left-handed shooters.
9. Upgrades and Accessories: The Sub 2000 Gen 2 can be customized with various accessories, such as optics, foregrips, suppressors, and aftermarket triggers.

It’s worth noting that Kel-Tec periodically updates and releases new variants of their firearms. For the most accurate and up-to-date information on the specific model you are interested in, I recommend visiting the Kel-Tec website or contacting a reputable firearm dealer.