I read most of the linked court statement, until my eyes crossed and my brain refused to go any further, and there seems to be two different, interlinked issues.
First, and apparently foremost in the PA court's eyes was whether or not the PLCAA actually applied, and if so could be used as a defense.
The Fed law has several "qualifiers" under which a gun maker/seller can be sued, ONE of them is defective product.
One thing that did surprise me was that the PA court did NOT accept either the text of the law, or the on record statements of the guy who wrote is, as conclusive evidence of the intent and scope of the act's coverage.
In effect, they said "we don't care what the author wrote or what people have been doing for years, we are making our own ruling". Or so it seems to me...
The other point is not directly addressed, other than an apparent assumption that the claim of a defective product is true.
IF TRUE it would allow suing the maker under the PLCAA.
But, IS IT TRUE??
IS the pistol "defective" because it lacks a magazine disconnect? Were the maker, and the seller AT FAULT for NOT instructing the boy who was not the purchaser or legal user of the pistol that the lack of a magazine disconnect meant the pistol would fire a chambered round with the magazine removed?
TO me, that seem more of a leap of blind faith than even the most lengthy stretch of logic.
In other words, it seems the plaintiff is saying the gun was defective, because we say it was defective, with no other evidence.
PERHAPS the intent of allowing this case to go forward is the desire of the PA judge panel to give them the opportunity to prove the "defect" by argument in court. Or not...