[Dave.1]

I've got one of these from Harbor Freight that clamps to a bench but I don't know if that would work for you.
https://www.harborfreight.com/2-1-2-half-inch-table-swivel-vise-97160.html

I also have one of the vacuum base type but don't think it would be strong enough to remove really tight sights.
https://www.harborfreight.com/2-3-4-quarter-inch-articulated-vacuum-vise-3311.html

There are quite a few universal sight pushers available one line that wouldn't require bolting down. You might want to look a some of them. Maybe some of the members here can give info if they have any of them.

Dave

 

[Dave.1]

I mis read that I thought you wanted us to suggest a VICE !

Buying tools is a VICE!

Dave

 

[Dave.1]

I got this drift from Brownells. It has different size nylon, brass and aluminum tips available. I filed the brass down to fit a sight dovetail and give it more surface area to work with. I still wouldn't use it on night sights. Others may have the experience and skill, but I don't.


Dave