Here's a unique one: guns and eras, advice?

[Nyles]

Don't know anything about airsoft guns or whats available, but what you want seems easy enough.

1960s - basically any commercial bolt-action rifle with a wood stock and open sights would look right. A Winchester Model 70 would be ideal. As for your pistol, probably a Colt 1911, maybe even a Commander. An early S&W auto like a 39 or a 59. WW2 surplus pistols of various kinds, like a P.38 or a Beretta 1934.

1990s - Pick your Smith & Wesson. Better if it was blued and had wood grips.

2000s - Pretty much anything works.