Add a little fun to your firearm training with Birchwood Caseys Popper Steel Target. 8-dia. AR500 steel plate is 3/8 thick, making it compatible with any caliber. Spring-free reset works time and time again. Easily portable and features a quick, easy stand assembly so you can take it anywhere. Made in USA. 22H. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Targets.