How did you get a free gun?
That looks to be around 1990+2000 year mfg, though it looks more like the model 94 based model, because of the grips.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©