It's some fun. Unfortunately, my spouse does not allow me to shoot airgun in basement. I had an air-soft PPK in the past.
Looks like this type of pistol is gaining some popularity in the US now... one tell sign is mainstream supplier Brownells Inc. posted cleaning and lubrication video on youtube.com recently. There must be many players nowadays...
https://www.youtube.com/watch?v=ZcvfePlG-cs