I bought a 79 with a solid 4"single tube rear bumper, it hurt when it fell on me, I didnt know it was solid and like 300 pounds, it only got my knee. But yeah I say build one.
So it was solid 4" round stock
![Huh??? ???](https://board.marlincrawler.com/Smileys/marlin/huh.gif)
Thats just crazy. I'm always amazed by the heavy ass bumpers people make.