Hi, I got the MGM IPSC target and ordered and received additional 6" and 12", 3/8" thick, round plates from Shootsteel.com. I also bought a 5x1/2" plate from Shootsteel to be used with rifle at 100yds. The plates from Shootsteel are shipped Priority Mail and received anywhere in the country in 3 days or less. The laser cut edge of the Shootsteel plates look like the plates were machined, it looks so good.
Shooting steel has been so much fun. My divorced sister-in-law loves shooting the IPSC target (she calls it the no-good man). Shooting steel brings a new dimension to recreational shooting. However, as lipofsky suggests, you go through a lot of ammo, really fast.