Found this on a link from an email. 20% off with code 46100, free shipping over $99. It isn't 1/2" AR500 steel, but claims to be certified DOD armor plating. For the price I figured I'd give it a whirl. Most of my shooting will be with pistols anyway and no steel core out of rifles. Magnetic stencils are super cheap as well. With discount the 5/16" 8" gong is about $14. Going a long way to setting up my range!!
https://gun.deals/product/save-20-ba...ootingtargets7