IRD Marketing said all the IRD (now Trijicon) scopes were clipons ... but that is such a stretch ... I'd call it bovine scatology.
The SNIPE, is a clipon. Otherwise, none of them are.
This is why:
01 - All the scopes in question (except the SNIPE) have PVS-14 rear lens housings. The PVS-14 housing cannot support any magnification level other than exact 1x. In my book a clipon should be able to support at least 2x, if a 320/336/384 or at least 4x if a 640. But no optic with a PVS-14 rear housing can support any magnification other than 1x. That's the laws of physics as they apply to that lens system.
02 - None of the scopes (except the SNIPE) have a collimating rear lens (the PVS-14 housing is not a collimating lens). In my book, the definition of a clipon is a NOD that has a collimating lens on the rear ... risley prisims collimated on a collimating table and able to optically center the image seen from the real world, passed by the core to the rear of the thermal display to the rear lens housing and over to the day scope. That means if the day scope optical center is 0.2 inches higher and lower than the optical center of the of the thermal then the collimated risley's prisms will handle it. On my "real" clipons, the KAC PVS-30 and the BAE UTC-x ... you slap the clipon on the rifle and shoot and you are dead on out to 900yds (as far as we shoot at night). No adjustments needed or even possible. With the Trijicons there are adjustments possible, but because there is no collimating lens, we should expect to have to use these adjustments features for every rifle. With the PVS-30 and UTC-x there are no adjustments. BTW, the SNIPE does have risley prism rear end.
So, I rest my case. The Trijicon scopes are billed as having clipon capability, but IMHO that is so marginally the case, that I would say it is equivalent to not the case.
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That said, from reading above dogsniper words, it sounds like his 'very limited" clipon capability is not present in his current scope. Not sure if that is on purpose or otherwise. But his current scope is non-functional, so we have to wait and see what his next functional one can do.