The Hatfield SAS Semi-Auto 20 Gauge shotgun is a firearm designed for a variety of purposes, including hunting, clay target shooting, and general shotgun sports. Here are some key features and information about the Hatfield SAS Semi-Auto 20 Gauge shotgun:

1. Gauge: The shotgun is chambered for 20-gauge ammunition. The 20-gauge is a popular choice for hunters and sport shooters because it offers a balance between manageable recoil and effective shot patterns.
2. Action: The Hatfield SAS utilizes a semi-automatic action, meaning it automatically ejects spent shells and chambers a new round when the trigger is pulled, without the need for manually cycling the action like a pump-action or break-action shotgun.
3. Barrel Length: The shotgun has a 28-inch barrel. The longer barrel can help improve accuracy and extend the effective range of the shotgun.
4. Chamber: The chamber is designed to accept 3-inch shotgun shells, giving you versatility in terms of the types of loads you can use, including standard 2.75-inch loads and more powerful 3-inch magnum loads.
5. Stock: The stock is made of walnut with a black finish, which can provide an attractive and durable appearance. The choice of walnut is a traditional and aesthetically pleasing feature on many shotguns.
6. Sights: The shotgun may come equipped with bead sights or a vent rib, depending on the model. Bead sights are simple and commonly used for aiming, while a vent rib provides a sighting plane for improved accuracy.
7. Magazine Capacity: The specific magazine capacity can vary depending on the model and local regulations, but many semi-automatic 20-gauge shotguns have a standard magazine capacity of 4+1 rounds.
8. Intended Use: The Hatfield SAS Semi-Auto 20 Gauge shotgun can be used for various purposes, including hunting upland game, waterfowl, and small game, as well as for clay target sports like skeet, trap, and sporting clays.
9. Safety Features: The shotgun may include safety features such as a manual safety switch, which allows the shooter to engage and disengage the safety as needed.
10. Accessories: Depending on the model and package, accessories such as choke tubes and a case may be included or available separately.

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, including any specific regulations related to hunting and shotgun sports.