“The .40 S&W round is typically a handgun round, however there are dozens of rifles chambered in the caliber. The rifles typically range in price from $300 to $800. Certainly, they are inexpensive enough to be used in an attack and disposed of afterwards. However, there’s another reason the cops aren’t really openly entertaining the idea that it was a .40 rifle. The .40 rifles are marketedalmost exclusively to law enforcement.”