These lasers are meant to handle firearm recoil.
As an airgunner too, I understand your question. PCP air rifles only have the "standard" recoil. This means they only push to the rear, albeit minimally compared to standard firearm recoil. If you have ever shot break barrel air rifles, then you have probably destroyed many scopes which aren't designed for the dual recoil force produced from the shot cycle, which comes from the launching of the projectile, and the sudden violent stopping of the forward movement of an air ram or spring piston. In short this would easily work on a PCP!! P.S. I have PCP rifles and break barrel guns. PCP's are much more forgiving...Also, I love my Hatsans!!!