The Mossberg 500 is a popular shotgun manufactured by the American company O.F. Mossberg & Sons, Inc. The Mossberg 500 is commonly known as a pump-action shotgun. Its ease of operation, durability and wide range of available designs make the Mossberg 500 a popular choice among many gun owners.

The Mossberg JM940 Pro is a self-loading shotgun from the Mossberg company. The "JM" stands for the name of the well-known shooter and gun designer Jerry Miculek, with whom this model was co-developed. The "940" indicates the type of rifle, while the "Pro" refers to the professional or more sophisticated version.

The Remington Model 870 Express is a shotgun made by Remington Arms Company. The "12GA" indicates the ammunition type. The Remington 870 is one of the most popular shotguns in the world and is widely used in hunting, sport shooting, police and military applications.

The Benelli SPAS-15 is an Italian self-loading/pump-action shotgun manufactured by Benelli Armi SpA. The abbreviation "SPAS" stands for "Sporting Purpose Automatic Shotgun", which stands for an automatic shotgun designed for sporting shooting. The interesting feature of the SPAS-15 is that the user can choose between pump and self-loading modes of operation. In the pump mode, the gun can be reloaded by a manual pump, while in the self-loading mode the gun is automatically reloaded after each shot. The weapon's very special design, its modern and futuristic appearance and its modes of operation make it a unique and remarkable piece among shotguns.