The ceramic plates don't have expiration dates (composite plates do, I think), the problem is, however, that the plate cannot function without the soft ballistic armor backing it up which soaks up the fragments. And soft body armor DOES expire quick.
When hit the ceramic plate and the bullet shatter and the soft ballistic protection catches the fragments.
There was a soldier in Afghanistan who only wore a plate when a sniper hit him with a 7.62x54r, the plate acted as designed but the bullet pieces and plate fragments entered his chest and he lost a huge part of his lung.
On the x-ray his chest looked like a grenade had exploded in it and I bet the bullet would have caused LESS damage without the plate.
Oh, why does soft ballistic armor expire? Its made of materials that get hard and brittle over time, especially when exposed to UV radiation and sweat. I think new stuff usually expires in approx 5 years or so. I would not bet my life on old expired armor. The soft armor can be replaced but its expensive and sometimes hard to get, harder than plates.
So body armor only makes sense if you're in the security / military business and the company you're working for keeps your armor up to date.
I guess the smart way to play it would be to just hang onto the cash, see what comes along.
Well, if super-inflation is what comes along.....
Crossbow would make a cool survival weapon. Ammunition sure would be easier to come by! Of course, they don't make any noise either, which is a plus.
Absolutely, the main problem I have with crossbows is they don't look pretty. Thats not a joke.