[TheKlawMan]

Thanks to a new member, Barthbnatos, for posting about a dangerous conditon with accidental discharges and pre-1994 Mossberg 500s,

Here's a reference from the Naval Safety Center:
http://www.public.navy.mil/navsafece...2012/3rd12.pdf

To sum it up, shotguns of this model put together before 1994 had a different firing pin spring. They should be replaced with a new part to avoid a shock to the weapon from causing a discharge, even with the safety engaged.

Here's a link to the Mossberg Customer Service / Parts page (USA):
http://www.mossberg.com/content.asp?...ection=service

The Naval Safety Center alert involves a shipboard accidental dischatge occurring when a wave caused the muzzle of the Mossberg 12 gauge shotgun's muzzle to strike the ships hull, even though the weapons safety was engaged. The specific model was the Mossberg 500A1.

Does the same risk apply to a pre 1994 Mossberg 500? I do not know but if I had one I would find out. Regardless, other FTL threads warn of the risk of accidental discharges from a shotgun even with the safety engaged.