Birchwood's World of Targets Popper steel target is made of 3/8" AR500 steel and stands 22" tall. Built with portability & durability foremost in mind, this unique, spring less design allows the popper to rest again and again. Use your favorite caliber to knock down an 8" paddle that provides the shooter with a generous shooting area and sound. The unique stand assembly allows for complete assembly or disassembly in minutes.