<human>:  What's the difference between blanks, and live rounds of bullets? I'm trying to figure out if you can make them look similar.
<bot>: You probably mean “blank cartridges”, which are usually used in regular rifles. “Live rounds” are usually used in semi-automatic guns. Some semi-automatic guns fire two rounds at a time (in the same chamber), or one at a time (one round in each chamber), which is commonly called a “clip” or a “magazine”. Sometimes a magazine contains more than one round. The bullets can look similar, but their function is different. The “live round” is in the chamber and is ready to be fired. It will make a “bang”, or fire. “Blanks” are not live rounds; they are “mock” or “dummy” rounds. They don’t make a noise or cause a recoil. They are used in a “laser” or “laser sight” to give the shooter a “sight-picture”, and are important for training. You can find blank cartridges for sale in a gun store, and sometimes online.