armedcitizensnetwork.org
Link is to an interview with an attorney by the Armed Citizens Legal Defense Network that adds a little fidelity to the discussion..
Its not a matter of someone being prosecuted based on modifications whereas otherwise there wouldnt have been a case in a criminal court.. the shoot is either justified, or its not.. whether you shot someone with a .22 or a 30-06.. a pistol or a rifle.. or a crossbow.. youre going to have to meet the jurisdictions requirements for utilization of deadly force in a self defense situation..
its a matter of civil liability.. whether or not youre giving someone the opportunity to pursue you or providing them an angle of attack that they otherwise wouldnt have had..
In the civil courts, decisions are often made over dollars rather than right and wrong... if youre going to pay $150K to defend yourself and have a 50-50 shot at winning a $5M lawsuit.. as often as not cities, counties, agencies, companies, etc.. will choose to "settle" for a lessor amount.. just to avoid the bad PR, the court of public opinion, and to reduce the chances of getting hit for the full value of the lawsuit in the event of a loss.. whether or not someone is guilty of something is often unfortunately an afterthought.. the financial impact (short and long term) is often the greater focus..
As someone stated earlier in this thread.. its a sad reality that most people in this country cant afford to defend themselves.. even when they are innocent..
So.. If an unmodified, factory Glock helps to lower that liability exposure and will get the job done sufficiently.. why modify it?
The linked article above also touches on some of the political and social issues that impact both the criminal and civil courts and decisions and perceptions that are made regarding modified firearms... its well worth the read IMO