[Rusty Gun]

I have a 4” mounted on a bench I built with 2x6’s and screwed to the wall in the garage. Doubles as all projects bench. Use this vice all the time with soft rubber jaws to work on guns. It works perfect to hold the block that fits in the mag well on the AR’s.

Took flat rubber truck mud flaps and covered the bench top so I can pull push or even pound on the bench top and nothing gets scratched or dented from the bench surface.

 

[Rusty Gun]

I don’t remember but they were pretty big and real cheap. Like $25 for three of them.
The bench top is 24” deep and 6’ long and I had to cut them off at 24”. I think they were 34” or 36” wide. I had to look at 2-3 truck supply places to find flaps that were big and smooth. The ones with ridges or names written on them might work if they have a smooth side. I got the idea from a buddy that had a big piece of rubber convert belt from a coal mine on his bench top.

 

[Rusty Gun]

Looks like your setup is pretty nice. I would struggle without a solid bench. I hate stuff that shakes or wiggles as the tools and equipment on the table seem to end up on the floor.