West Midlands Police firearms officers will be issued with electrical weapons that deliver a 50,000 volt shock from today.
The Taser M26 electrical weapon will be used by all of the force's 130 firearms officers as a means of tackling violent offenders who are believed to be armed.
The weapon will give armed officers a less lethal alternative to the conventional weapons used by firearms units across the country.
The issuing of Tasers follows a detailed evaluation of a 12-month operational trial of the weapon by five police forces.
During the trial, which ended in April 2004, Tasers were deployed alongside conventional firearms in 60 situations where people were either armed or thought to pose such a threat that the use of a firearm by a police officer might have been necessary.
Although it was aimed in 40 of these incidents, it was only actually fired 13 times during the year.
According to police its presence alone was enough to make the person who posed a threat comply with police demands and allow the incident to be brought to a peaceful conclusion in the majority of situations.
Inspector Andrew Crowson, from the force's firearms operations unit, said: "We are constantly seeking less lethal options to resolve dangerous situations as safely as possible.
"The Taser provides officers with another tool which may be more appropriate than a conventional firearm in certain circumstances.
"However, it is important to stress that Taser is not a replacement for firearms and where officers face a threat from firearms they will meet that threat with firearms."