It is difficult to find the make and model of the gun in any shooting incident. It could be a derringer and they will show a file picture of a 9 mm Glock or a Colt Model 1911 45. They use the word automatic instead of semi-automatic and so forth.
http://www.vnews.com/news/6095717-95/family-sues-gun-shop-gun-makers
There was a case of a drop fire death in Springfield, VT in 2010 that the family brought suit. After numerous searches I found one article with the name of the pistol. I will give credit to some of the other articles since the did report it was a revolver. It was a replica piece, an Uberti Regulator SAA Revolver.
The revolver Davis purchased had one safety mechanism, a spring-loaded hammer block that was supposed to block the firing pin from striking the back of the cartridge, to prevent an accidental discharge, according to the lawsuit.
The safety mechanism only works when the revolver is in the one-quarter cocked position: When the revolver is un-cocked, half-cocked, or fully-cocked, the block is designed to not function.
While more extensive firearms testing is pending, the Davis family made two claims in the lawsuit: That the safety mechanism was defective, and that even if it was working properly, it was inadequate to prevent the gun from firing when dropped, according to the lawsuit.
Additionally, the Alstead Gun Shop should have fixed the defect or explained its shortcomings to Davis, the lawsuit asserts.
This article had it that the gun was "partially loaded" whatever that means.
This link was were I found the model:
http://mikeb302000.blogspot.com/2013/05/dropped-gun-death-results-in-lawsuit.html
I lot of people own and shoot replicas and older handguns. So even if firing pin blocks work every time not all handguns have them, and few if any long guns.