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

[mr_Goodbomb]

I'm working on a film that's sort of a period piece. There's a section for the 60s, 70s, 80s, 90s, and current. Each era is written a different way to suite the period, and each one has a firearm or three in them. The guns can be from BEFORE that era, they don't have to be brand new to that time period, so long as they're still often used in that time period and (for firearms) easily accessible, so they don't look like something no one would have access to in that era. Here's what I'm looking for:

I need weapons that suit each given era and I need to find airsoft versions of them (IE non-firing replicas) for a low price. If they're slightly inaccurate in some cases, that's fine, and I can paint them if the finish looks less than convincing. It would also be nice if they were distinct, so they didn't repeat (two combat shotguns in different time periods, two revolvers, etc).

Here's the eras I need and the weapons I need for those eras...

1960s:

- (1) Lever action or bolt-action rifle, used by a novice who, over the course of the script, learns to use it proficiently at good distances, basically learning to snipe from long ranges with it
- (1) handgun or smaller sidearm that can be disassembled or at least have a clip or similar to put in... It would never be used, but kept in a case and, in a situation, the character takes too much time assembling/loading it from the case to actually use it when needed

1990s:

- (1) classic-looking revolver, but not so "classic" that it would look entirely out of place. 6 rounds would be best.

2000s:

- (1) pump action "combat" shotgun (pretty easily found cheap in airsoft weapons, so not a big deal)
- (1) handgun (again, modern-style handguns aren't hard time find in airsoft)

My main concern is the lever or bolt-action rifle, the smaller weapon that breaks down available in the 60s (NOT a revolver if I can help it), and the revolver. Please keep replica cost in mind. Thanks for the help!