Yes. I used it for that sight
This will only mount on a picatinny rail or on a gun pre-cut for optics. If you do not already have an optic mount on your P2000, it will not mount to your gun.
The Holosun 510C has a unique mounting footprint and will not mount to the Strike Industries REX - Reflex Exoskeleton.
The REX will not include the old thumb screw with the hex wrench hole. Since updated, we do not keep inventory of the old model thumb screw with a hex wrench hole.
Yes, the Strike Industries REX is compatible with Docter pattern optics such as the Burris Fastfire, Docter, Vortex Viper, Vortex Venom, etc.
The Strike Industries REX mounts to picatinny rail. So it will not mount to an Arisaka Defense Offset Optic Plate. However, the offset mount at the link below might work with the Strike Industries REX.
https://www.opticsplanet.com/vortex-45degree-red-dot-sight-mount.html
I bought both. Yes it worked, it has to be sliding from the front for anyone else looking at this combo..... So answered my own question
No, this is not compatible.
Yes, this is compatible.
Yes, this is compatible.