Glock Pistol Used by Police Raised Safety Issues
By Paul Barrett andBrian Grow September 09, 2009

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Safety has long been a point of contention for Glock of Austria. Unlike most handguns, which have external on-off safeties, Glock pistols are equipped with internal mechanisms that prevent firing. These internal safeties are disengaged merely by depressing the trigger. The ability to fire immediately, without worrying about an external safety, is one feature Glock has stressed as an advantage when selling its guns, especially to police departments.

Skeptics see this feature in a different light. The Consumer Federation of America has cited the Glock's design as one reason the gun has been the subject of dozens of lawsuits filed after unintentional shootings, including a number by police officers. The company has won or confidentially settled most of these cases without acknowledging any liability.

Paul F. Jannuzzo, Glock's former top executive in the U.S., says in an interview that, overall, the company's pistols are as safe as comparable handguns—and more durable. "The one problem," he says, "was [the Glock] would go off sometimes when it wasn't supposed to."
http://www.businessweek.com/stories/2009-09-09/glock-pistol-used-by-police-raised-safety-issues

It got tangled in my clothing," Counceller said of his gun, according to the Indy Star. "I was wearing a sweatshirt and a fleece jacket. I felt (the gun) go in the holster and I pushed it, but it was tangled in the material which caused it to discharge. The bullet went into my leg and then into the floor."

Trigger Pull Weight for a Handgun

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>As a general rule a serious use pistol should have a trigger no lighter than 4 pounds and ideally no more than 6 pounds. Average shooters will generally shoot a pistol with the same trigger pull weight from shot to shot better than a double action/single action pistol that has a long and relatively heavy first trigger pull followed by lighter and shorter trigger pull for each following shot. A perfect example would be a Glock 17 with a factory stock trigger that weighs approx 5 pounds and is the same for each shot vs a Beretta M9 with a double action first trigger pull of approx 13 lbs and a 5 lb single action trigger for each shot after. Although DA/SA guns can be mastered the average shooter will definately shoot a pistol like a Glock better than a Beretta.

In addition a trigger below 4 lbs can easily lead to accidental discharges under conditions of stress. Remember fine motor skills degrade rapidly and not only does the shooters ability to shoot accurately suffer but because of this a 4 lb trigger will feel like a 2 lb trigger when you are truly in fear for your life. Add into this sweaty hands, rain and/or cold, and possibly gloves and you begin to see why finely tuned match triggers of 3 lbs or less have no place on a serious fighting tool.
http://vickerstactical.com/tactical-tips/trigger-pull-weight/