When Glock offered the pistol to the Austrian army, it was adopted into military service as the P80. When Glock released the gun commercially, it was offered as the G17, which is the name most U.S ...

The Glock P80 comes with standard Glock-style front and rear sights. This first-generation Glock would arrive in the U.S. four years later with the designation changed to G17 for the consumer market.

This means the P80 frame can be installed on all of the following models, at minimum: 17, 17L, 19, 22, 23, 26, 27, and 34. Last but not least, P80 kits are also very affordable.