As one of my first less lethal personal purchases I bought the Taser M26C. This technology is older and has been used by law enforcement and private security since 1999, thus it is a proven technology but it is also bulkier than some models that came later. Since it is bulkier it is not the best model for the purpose of concealed carry, and it is not legal for concealed carry in all states so check with your local city and state police. It has a very nice built-in laser sight that turns on once the safety has been turned off and the weapon is ready to deploy. This laser sight may be a deterrent enough to stop an attacker, but if not, then the shock and ensuing incapacitation will. Unlike pepper or OC sprays, ECDs like the Taser M26C provide incapacitation by hi-jacking the nervous system of it’s targets, as opposed to severe burning of eyes and throat caused by OC sprays. The weapon works by firing two electronic probes or darts at it’s target using compressed nitrogen, these darts have the capability of penetrating up to two inches of clothing with a 5 second shock cycle per trigger pull. Replacement cartridges are available. The weapon’s deployment range is 15 feet (standard for civilian models of any ECD). But if you are web-savy you might be able to find a site that will sell the 21 foot cartridges to you, (these are typically for law enforcement). Once the cartridge has been fired you can use the weapon as a regular contact stun gun, but this requires you to get up close and personal with your attacker (not recommended). This model takes off the shelf AA batteries which are stored in the pistol grip. In the event that you have to use your Taser in an actual emergency the company offers a free lifetime replacement policy if your device is lost, just send in a copy of the police report to the company. All Tasers use an AFID, a system to deter misuse through enhanced accountability, AFID includes bar-coded serialization of each cartridge and disperses confetti-like ID tags upon activation.