Gun laws need to be federal. The patchwork we have is one of the major reasons that local and state laws are so hard to enforce. In the era of mass shootings, suppressors can make it more difficult for first responders to locate an active shooter, and seconds count in saving lives. Do not let states decide individually how to regulate these accessories. Ear protection does not need to be added to the gun, as ear plugs and muffs are a perfectly good way for hunters and target shooters to protect their hearing.