Well, it turns out there is one fairly important thing that can go wrong ...
The Horrible Malfunction:
Apparently manufactured by our own favorite drunk uncle, the 2002 version of Uncle Mike's gun holster for Glock model handguns had a nasty tendency to shoot at people.
Which isn't to say the holsters were useless.
The malfunctioning line featured a retention strap that did the exact opposite of what it should have done, i.e., securing the gun in place so it couldn't be accidentally fired. Instead, when you took your gun out of the holster, the strap had a tendency to move out of position and actually pull the gun's trigger when it was reholstered.
Heads started turning after three separate occasions of holster-induced involuntary discharges, not least because one of them was an actual cop who was shot in the leg. Instead of completely recalling the product, the company opted to just replace the flawed straps with a wider, differently designed version that the consumers could install themselves. Because when your product has a flaw that shoots bullets, the most logical move is to make your clients fix it DIY style.
Consumer Product Safety Commission
"Any customer foolish enough to buy our product deserves only contempt."