The SightMark T-5 Magnifier is designed to be used with absolute co-witness height red dots. The SightMark T-5 Magnifier does not come with any spacers to adjust the mount height. Since the Vortex StrikefireII sits at a lower 1/3 co-witness height the SightMark T-5 Magnifier will not work with it. I recommend using the magnifier at the link below.
https://www.opticsplanet.com/vortex-micro-6x-red-dot-sight-magnifier.html
No. The SightMark T-5 Magnifier is not compatible with prismatic optics. The same goes for all magnifiers on the market.
Yes, the SightMark T-5 Magnifier includes an absolute cowitness mount, which will align with your Sparc II when using an absolute cowitness mount.
The SightMark T-5 Magnifier will work with a 12G shotgun as long as you have available flattop picatinny rail to mount the magnifier behind your optic.
Yes, the SightMark T-5 Magnifier will work in conjunction with the Sightmark Wolverine.
Yes, the SightMark T-5 Magnifier is compatible with the Holosun HS403R 2 MOA Red Dot Sight.
The SightMark T-5 Magnifier will function as intended paired with a Sig Romeo 7.
The SightMark T-5 Magnifier can be set up to flip to the left or right side. There are no spacers to allow height adjustment with the SightMark T-5 Magnifier. It will sit at an absolute co-witness height.
The SightMark T-5 Magnifier will work with a Crimson Trace CTS-103 red dot sight.
The SightMark T-5 Magnifier can be used with the Sig Romeo MSR.