The GLOCK pistol is one of the most widely used and easily recognized pistol. This particular one is patterned after their Gen4 model.  The GLOCK 19 is effectively a reduced-size GLOCK 17, called the "Compact" by the manufacturer. It was first produced in 1988, primarily for military and law enforcement.

The Umarex GLOCK 19 Gen4 GBB pistol faithfully replicas the same features externally.  The pistol works on regular green as and fires with a crisp, fast cycle. The added benefit of this being a licensed product is that it can also work with many other accessories designed for GLOCKs such as weapon lights, holsters, etc. without having to worry if your pistol will be to specifications.

As a G19 Gen4 as well it will feature the same style internals as the G17 Gen4, most notably with the duel recoil spring which will give it added snappiness and increased recoil impulse.

Being a fully licensed product, all the corresponding markings are the same as what you will find on the real firearm.