If you need something more portable than most stand systems to hold up those targets, check out this site. I have these and they work great.
The conduit and 2 x 2's that they work with are cheap and replaceable. http://eztargetstands.weebly.com/about.html
Otherwise I use Shoot-N-See or Dirty Birds stuck to cardboard.
Our range only allows paper, or their dedicated steel targets at 100, 200 & 300 yards (approx)