Has maybe 100 rounds through it, comes with extra mags.

LE17-22

I also have a complete P-80 frame for $100 if bought with the kit.

This .22 LR Conversion Kit converts your GLOCK Handgun into a .22 LR. It allows you to shoot inexpensive .22 Long Rifle ammunition so that you can shoot longer and more often. It turns your GLOCK into an ideal pistol for first time shooters and makes a great tool for teaching women and young adults how to safely shoot a pistol without the intimidation of larger calibers such as 9MM and .40 S&W.