Burris does not provide the weight of their Scope Tube FastFire Red Dot Mount. I would recommend contacting them directly for more information.
The Burris Scope Tube FastFire Red Dot Mount is a 1" diameter scope ring. So it will work with 1" diameter scope tubes.
No. This Burris Scope Tube FastFire Red Dot Mount is only compatible with optics that utilize the Docter/Noblex optic footprint. We do carry the Leupold Mark 4 DeltaPoint Pro Ring Top Mount for 1" scopes that can be found by using the link below:
https://www.opticsplanet.com/leupold-mark-4-deltapoint-pro-ring-top-mount.html?_iv_code=LU-MT-M4DPRO-175541&_iv_tube-diameter=1-in
Yes there is. It is item number 410338
Yes, the Vortex Venom is compatible with the Burris Fast Fire scope tube mount.
There are no exact measurements provided by the manufacturer, but based off of my experience it will raise the red dot approximately .25-.5" off the scope tube and you will want approximately .75" of scope tube to mount this too.
No, this mount will only fit 1" tubes.