I agree. Restricting firearms will help, but it can only do so much. We'll need to do a lot more in order to get things under control. The thing is, most rifles are powerful enough to penetrate most body armor. Military grade body armor prides a little more protection against some rifle rounds, but not most. And the AR15/M16 rifle often used in these mass shootings fires a 5.56mm NATO (.223 Rem) round that isn't particularly powerful. (To put it in perspective, it is illegal in most jurisdictions to hunt deer with a 5.56/.223 because it is not considered powerful enough to make a clean kill on deer sized animals).