Thousands of communities across this country. Now, they would not replace local Law Enforcement of course. But she believes that they could help support them. Thank you. All the talk about automatic and semiautomatic weapons leaves people to wonder the difference. Phil matier reports. Reporter one visit to the Evidence Room gives you a good idea of how many guns are on the streets of america and often the difference between a legal and illegal gun comes down to how many bullets it can fire how quickly. This is an assault rifle. Reporter it started out as a legal semiautomatic which means you have to depress the trigger each time you want to fire. Reporter then the size of the clip. In the state of california you cant have more than ten rounds in any firearm. Reporter the same for handguns. The capacity of the magazine dictates if it now becomes illegal. This is a high capacity magazine. This carries 30 rounds of ammunition. This can be inserted into this weapon and now it becomes an il