The Kel-Tec KSG is a popular and innovative shotgun chambered in 12 gauge. Here are the details of the Kel-Tec KSG with a 12 GA, 18.5-inch barrel, 14-round capacity, and optics-ready design:

1. Gauge: 12 Gauge
2. Barrel Length: It features an 18.5-inch barrel, providing a good balance between maneuverability and accuracy.
3. Capacity: The Kel-Tec KSG has a generous 14-round capacity, allowing for extended shooting sessions without frequent reloading.
4. Optics Ready: This shotgun is designed to be optics ready, meaning it has a rail or mounting system that allows for the attachment of various optics, such as red dot sights or scopes.
5. Bullpup Design: The KSG has a unique bullpup design, with its action located behind the trigger, resulting in a compact and maneuverable firearm.

The Kel-Tec KSG is known for its compact size, high capacity, and versatility. It is often favored for home defense or tactical applications. The shotgun features dual tube magazines, allowing you to switch between them using a manual selector switch.