The Rock Island X4 TACT Shotgun is a semi-automatic shotgun designed for various tactical and self-defense applications. Here are some key features and information about the Rock Island X4 TACT Semi-Auto 12 Gauge shotgun:

1. Gauge: The shotgun is chambered for 12-gauge ammunition, which is one of the most common and versatile shotgun calibers. It is suitable for a wide range of applications, including self-defense and tactical use.
2. Action: The Rock Island X4 TACT utilizes a semi-automatic action, meaning it automatically ejects spent shells and chambers a new round when the trigger is pulled. This can provide rapid follow-up shots in high-stress situations.
3. Barrel Length: The shotgun features an 18.5-inch barrel, which is shorter than traditional hunting shotguns. The shorter barrel length is intended for close-quarters combat and maneuverability in confined spaces.
4. Chamber: The shotgun has a 3-inch chamber, allowing it to accept a variety of 12-gauge loads, including standard 2.75-inch and 3-inch magnum shells.
5. Finish: The shotgun typically features a black finish, which can provide durability and corrosion resistance.
6. Stock and Forend: The shotgun may feature a synthetic stock and forend, which are durable and weather-resistant. These components are often designed with tactical ergonomics in mind.
7. Sights: The Rock Island X4 TACT shotgun may come equipped with ghost ring sights, fiber-optic sights, or Picatinny rails for mounting optics, depending on the model. Ghost ring sights are designed for quick target acquisition.
8. Magazine Capacity: The specific magazine capacity can vary depending on the model and local regulations. Some semi-automatic 12-gauge shotguns have a standard magazine capacity of 4+1 rounds, but extended magazines may also be available.
9. Accessory Compatibility: The shotgun may have accessory compatibility features such as a Picatinny rail on the receiver for mounting optics, lights, or other tactical accessories.
10. Intended Use: The Rock Island X4 TACT Shotgun is primarily intended for tactical and self-defense purposes. Its short barrel and semi-automatic action make it well-suited for home defense and law enforcement applications.
11. Safety Features: The shotgun may include safety features such as a manual safety switch or other safety mechanisms to prevent accidental discharges.

Always follow safe firearm handling practices and adhere to all safety rules and regulations when using any shotgun. Additionally, be aware of local and state laws regarding the purchase, ownership, and use of firearms, especially for tactical and self-defense shotguns.