The laser pistol is a piece of sports equipment used to imitate firearms and is used in some sports including modern pentathlon, laser-run and triathle competitions. Laser pistols do not fire projectiles and can therefore be safer for spectators and participants. They can also be used in more places since the requirements for a backstop are not as strict except for laser eye safety. Regulation varies between jurisdictions, but they are usually not subject to laws concerning air guns or firearms and are often sold freely.