This may seem an odd post, but a recent New York Times article posted on this forum suggested that AR 15 semiautomatic weapons are fully functional at least until 2119 or perhaps several decades after. I thought to myself, "that's it?". It seems to me that most weapons, if fired only occasionally, should last millenia, if kept dry and oiled. I shoot mostly 19th and early 20th Century firearms. Very few I own are less than a century in age. The wear on most of them is due to handling. My early percussion revolvers do not appear as though they were manufactured in the 1850's and 1860's, but they were. There's nothing I'm aware of, as long as stored properly, that would just cause iron, steel, brass, or wood just to decompose due to extreme age. Seems to me most firearms out there, If not exposed to the elements, could last forever. If we, as mankind, cease to exist, their lifespan, of course, would be limited by the decay or natural destruction of the structures and safes they are stored within. Of course, there's no reason why function would cease, if only occasionally fired. Comments?