The Viridian Weapon Technologies X5L-RS Gen 3 Universal Green Laser Sight does not come with the charger, you will have to get that seperately.
No, it will not be tall enough to clear the Front sight Post.
If your shotgun has a rail system, then yes, this item will be compatible.
The light/laser unit will fit, however you won't have room for the remote switch.
Yes as long as you have a picatinny rail to attach it to.
This is made in the USA. Unfortunately Viridian has not provided the dimensions, even on their own site. We recommend contacting the manufacturer directly, they should be able to provide you with that information. You can reach them here: https://viridianweapontech.com/contact/
Viridian does not offer the long gun set up with the pressure switch in FDE. They only offer the light/laser X5L in FDE. You can get just the light here:
https://www.opticsplanet.com/viridian-weapon-technologies-x5l-gen3-universal-rail-mount-green-laser-with-tact.html
But you would need to reach out to Viridian for the pressure switch parts.