- M3 sub machine gun (aka "grease gun") chambered in .45 ACP : https://en.wikipedia.org/wiki/M3_submachine_gun
- I thought this was going to be a M16 with M203 grenade launcher but the upper receiver doesn't look right and there's no buffer tube... which means it can't be a M16. What confuses me more is the magazine looks exactly like the old steel 30 round magazines for a M16. Based on the magazine alone, I'd say it's chambered in 5.56x45 NATO (similar to .223 Remington). Maybe someone who knows firearms from that era can provide more info.
- No idea
- Best I can tell based on the picture - 1911 in .45 ACP
- Same as #2 - kind of looks like a M16/M4 but isn't unless there's a buffer tube under that stock wrap. And, based on the stock style it's probably a folding stock which eliminates M16's in that time frame. There are aftermarket doodads to allow folding stocks on that style rifle now but I wouldn't expect them to show up in this area
- Not sure.
- No clue
- Probably an AK of some type ~~(with no magazine~~ see EDIT) based on the fire selector switch, dent in the receiver, gas block, and stock. Presumably with the long eye relief scope mounted on the rear sight block. ~~I don't have a ton of confidence in this guess but that's the best I can do~~. If so, AKs are typically chambered in either 7.62x39 or 5.45x39 depending on the model.
EDIT : I realized there is a magazine in #8. I wasn't looking closely enough. Definitely an AK.
Hope this helps but take everything I said here with a grain of salt - I could definitely be wrong or missing something.
Now, I'll wait for someone to ID #2 because I'm super curious.
EDIT x2 : Based on the chunky gas block on #2 and #5 I'd guess that it's piston operated which further eliminates the option of M16 but does explain the lack of a buffer tube. The interesting part is that the left side of the receiver on #5 looks almost exactly like an aluminum receiver from the M16/M4 style of rifles. It's somewhat rounded in the middle with a rectangular outcropping near the front. I've never heard of anything in wide circulation that uses effectively a M16/M4 receiver but is piston operated rather than gas impingement (there are piston operated AR-15s but they're kind of niche). Very curious.