I had issues with the QRP mount on a PRO coming loose during shooting. I read some recommendations to just bear down on the knob and force it to go tighter than the torque click-off naturally would go. That helped a bit, but in my opinion it's just a bandaid and not acceptable for an optic mount.
I think the PRO itself is a fine optic when mated to another mount (Geissele, ADM, etc.). It is, however, unnecessarily large for what it is these days.
Also -
LOL. Zing.
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