This break-barrel air pistol, called the Umarex SPA, offers tons of fun for very little expense.
The pistol is powered by a coil spring, which must be compressed by folding the barrel downwards. Insert a single lead pellet into it, fold it back up and you're ready to fire. The barrel is rifled, therefore it can even handle target shooting at a distance of 10-15 meters. There is no mounting rail, you can only aim using fixed sights.
All important components are of course made of metal and the protective frame is plastic. For a more reliable shooting, the manufacturer added a textured grip. To prevent accidental discharge, there is a manual safety located above the grip.