no! Def buy the ar! I love mine and have several of them ultimately it is every shooters decision what ammo to shoot. steel ammo has come along way from what the old men tell stories of and SHOULD be considered ESPECIALLY if training is paid for out of one's own pocket. Federal and lake city are great brass bulk rounds if you choose to go the brass route, I say out of experience. steel through my ar...experience is zero. I speak about the steel I bought, clarified again as tula 115gr 9mm. It gouged my gun and on that personal experience alone I choose not to risk it. I warn take ALL opinions, including mine, with a grain of salt. talk to gun smiths as well when deciding ammo and gun purchase not just the guy behind the counter( I was behind the counter three years studying as a smith now) hope this helps!