These are some weapons that ninjas use. As you can see ninjas use a wide variety of weapons. Ninjas are also leaders in technology and have the most advanced weapons in the world.
This is a ninja Katana. It has a 22 inch blade. This is the main sword ninjas use.
This is a typical ninja throwing star. It is called a shuriken. Ninjas can hit a target from hundreds of meters away with deadly accuracy using these. On a typical mission a ninja carries 5 shurikens.
This is the Ultimate Stock for the ultimate ninja. It is is manufactured by Choate Machine and Tool and built out of DuPont Rynite SST-35 polymer. Ninjas are able to hit a target the size of a penny from over ten miles away with one of these.
Well ninjas can use pretty much anything for a weapon, if there is a piece of paper on the table, and an angry ninja is nearby, run!