Oh, boy, here we go....the Dayton shooter used an AR "pistol" which is being described by the ignorant police and/or media as "Something that he converted into a rifle" using a legal "brace." Just a matter of time, in my opinion, before the ATF says, "Nope, that's a SBR, no matter what you call that "brace" thing (which we all know everyone uses like a butt stock).
Dayton shooter used a modified gun that may have exploited a legal loophole
Even though it looked like a rifle, the gun used in the Dayton shooting was likely classified as a pistol – legally skirting laws regarding short-barreled rifles.
www.usatoday.com