It’s a Hatsan Model 70 Vortex. This uses a gas-filled tube which breaking the barrel compresses to make the piston fly forward, rather than a spring. The model 70 is available as either that or a springer gun. They’re basically the same except that the gas tube can be left cocked.
Thanks for the appraisal but I want to reproduce that a few more time before I call it consistently achievable!
I think my new targets are not great. They seem to make it hard to get a consistent POI. I’m going to just draw a small black circle on the back as the front is too cluttered....
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