this post was submitted on 20 Jan 2026
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You Should Know

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Why YSK: Even if you don't own a gun, there is a chance you can encounter one at the home of a friend or family member. These are the four core rules of gun safety, but the same can be used with airsoft/paintball guns, nerf or even chemical spray bottles!

First, treat every firearm as if it were loaded. Even if it was clear the last time you saw it. If looking at a gun with someone else and they assure you it's not loaded, you can respectfully ask them to clear it in front of you before you handle it yourself.

Never point a gun at anything you are not willing to destroy. Pretend there is a lazer beam coming from the barrel. Don't let that "beam" point at anyone. That is known as "flagging". In nearly all cases keeping the barrel pointing down between your feet is a good move.

Keep your finger off the trigger until you are ready to fire. This includes the whole trigger guard area. Most people keep their finger on the frame well above the trigger guard, pointing their finger in the same direction as the barrel. This is known as "trigger discipline".

Finally be sure of your target and what's behind it. Bullets can still travel a long way even after they pass through a target. If you are target shooting make sure there is a solid backstop. If in a real life situation you must positively ID the threat, no shooting at shadows or noises.

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[–] Creegz@lemmy.world 3 points 1 day ago

Before I ever got a firearm, or before that paintball gun, I had this driven into me regarding power tools. I hold a drill the same way I hold a gun which I’ve been made fun of for, but I’ve never caught my clothes in a drill bit, or cut myself with a hole cutter like others I know. I also always put the safety on.

[–] _haha_oh_wow_@sh.itjust.works 12 points 2 days ago (1 children)

Maintenance should probably be in there too: A poorly maintained firearm is potentially dangerous to the user.

[–] DarthFreyr@lemmy.world 3 points 2 days ago (1 children)

Doing proper maintenance is more applicable to someone who owns or is responsible for firearms. I think the rule for the casual finder would be adding something like "assume moving any part of the gun may cause something inside to explode".

[–] _haha_oh_wow_@sh.itjust.works 1 points 1 day ago* (last edited 1 day ago)

The rule for a casual finder would be to not touch it at all: If you find a random firearm, leave it the hell alone and report it to the authorities. It could be a weapon used in a crime and it's probably not a great idea to get your fingerprints on it.

[–] SpruceBringsteen@lemmy.world 5 points 2 days ago (1 children)

Does every gun store have a jar for rounds they found in guns that have been handed to them?

[–] percent@infosec.pub 1 points 1 day ago

No. That would require too many jars, and seems like a waste of ammo.

[–] DarrinBrunner@lemmy.world 6 points 2 days ago

I've never so much as touched a gun and I know all of this. I suppose I've just absorbed it through constant contact in my peripheral. Recent movies are getting trigger discipline better, but TV shows still get it wrong.

[–] Curious_Canid@piefed.ca 34 points 3 days ago (2 children)

Some years ago I acted as crew on an ultra-low budget film. We didn't have the budget for simulated firearms so we had to use real ones. Everyone involved in the project agreed that extreme care was warranted. We made certain that there was no live ammunition anywhere near the set. Firearms were locked up unless they were being held by a trained crew member or an actor. The actors were all taught the basics of how their firearms operated and how to check the chambers. The prop handlers and actors checked every firearm every time it changed hands, even when they had just watched the person who handed it to them check the chamber.

With all of that in place, we still insisted on following the other rules as well. Trigger discipline was maintained at all times, including while filming scenes. Camera angles were adjusted so that firearms never had to pointed at anyone or anything that we were not willing to damage. Actors were careful to keep their firearms pointed in the safe directions that had been arranged, even when simulating their use.

It was a fair amount of trouble and it added time to a very tight operation, but there were absolutely no incidents, or near incidents, or concerns that there might be an incident. That is how everyone who handles firearms should treat them in real life. It takes a little time and attention, but it isn't difficult. And following even one of the safety rules makes it impossible for anyone to be hurt accidentally.

Learning and following the safety rules is a cheap investment for the benefit of not accidentally killing someone.

[–] phoenixz@lemmy.ca 18 points 3 days ago (1 children)

With reading this I'm always amazed that incidents like the rust movie still happen.

If you set things up like this where everyone checks each other as well, it becomes really hard to somehow get a bullet on set, and then in a gun...

[–] Curious_Canid@piefed.ca 11 points 2 days ago

We were fortunate to have a producer/director who felt strongly about safety and was willing to spend the extra time necessary. A lot of the time, especially for productions that are running on a shoestring, everyone is pushed very hard to reduce the time and cost to an absolute minimum. The low pay selects for inexperienced armorers and the time constraints means that the armorer is constantly being pressured not to "waste" any time. An armorer who is believed to have "slowed down" a production may be fired and will have trouble finding more work. That is what happens everywhere when money is more important than people.

[–] n7gifmdn@lemmy.ca 1 points 1 day ago

Someone should have told Baldwin

[–] not_that_guy05@lemmy.world 110 points 3 days ago (3 children)

Lastly, secure your firearms you uncultured swines that don't.

Not only for your safety, but the safety of your children if you have some. I hate that people don't follow this rule.

[–] victorz@lemmy.world 39 points 3 days ago (11 children)

Saw an article recently about this 10 year old who shot his dad in the head while the dad slept next to the mother. Kid found the key to the gun storage when searching for the Nintendo Switch his dad took away from him, and he was angry at the dad, found the gun... Now he has no dad. Mom woke up to a loud bang and the sound of liquid pouring on the floor.

Devastating read. Really tragic.

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[–] kowcop@aussie.zone 49 points 3 days ago (9 children)

Average Aussie here.. aside from on the hip of a police officer, the blokes moving money or on video, I haven’t even seen a gun in over 20 years.. good post for those who do hang around guns though

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[–] DFX4509B@lemmy.wtf 4 points 2 days ago* (last edited 2 days ago) (3 children)

Also, couldn't most of this also apply to things like industrial paint guns or grease guns given the very real possibility for a horrible death by high-pressure injection with those?

[–] hildegarde@lemmy.blahaj.zone 4 points 2 days ago (1 children)

I practice safe handling with the handheld barcode scanners at the hardware store checkout.

  • Do not point the scanner at anything you do not intend to scan.

  • Keep your finger away from the trigger until you're ready to scan.

  • Be aware of your surroundings including what is behind your target.

I would extend it to any gunlike, or vaguely gun shaped object, even those that cannot cause harm. Don't become complacent with safety practices even when it doesn't matter.

[–] n7gifmdn@lemmy.ca 1 points 1 day ago

#AllGunsMatter

[–] Rooster326@programming.dev 3 points 2 days ago

industrial paint guns or grease guns

So all guns then...?

[–] sol6_vi@lemmy.makearmy.io 3 points 2 days ago (2 children)

"High pressure injection" made me think of some gruesome deaths from paint and grease that I'm certainly sure can't be what you mean 😬 vivid picture though.

[–] Bytemeister@lemmy.world 4 points 2 days ago (3 children)

There is a good Hydraulic press video of high-pressure injections into clear ballistic gel, and it's fuckin wild. You can have something that looks like a little dribble of water coming out of a flexible line. Grab the line to remove it and bam, you just had a bunch of hydraulic fluid shot into your bloodstream, which will create an oil embolism and kill you.

[–] DFX4509B@lemmy.wtf 1 points 1 day ago* (last edited 1 day ago)

Holmatro does as well, specifically with that injury being simulated using a ballistic gel arm with fake bones in it, at 750 bar/10.4k psi. The oil from that simulated 10.4k psi leak blew right through that fake hand.

I kinda don't wanna imagine how terrible that would be to happen to someone in the real world if they touched an actual leaky hose at those pressures in the field. Also...

....you just had a bunch of hydraulic fluid shot into your bloodstream, which will create an oil embolism and kill you.

  • Or, you'll lose a limb from infection, degloving (literally losing your skin) is also a thing from stuff like this, again, due to infection, this sorta thing is horrible to happen to a person.
[–] DarthFreyr@lemmy.world 2 points 1 day ago (1 children)

That'd have to be at close range though, to create some sort of a temporary seal, right (as far as my physics intuition says)? Otherwise it should behave roughly similar to water in an open environment, where it would have to be the speed of the jet hitting you that does the raw damage.

[–] Bytemeister@lemmy.world 1 points 1 day ago

Yeah, you pretty much need surface to surface contact.

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[–] DFX4509B@lemmy.wtf 1 points 1 day ago* (last edited 1 day ago) (1 children)

Basically, if pressure from a stream of liquid is high enough, 100psi/6.8bar is enough to hurt a person, it'll break your skin and there's your injection; this is why for, say, anyone working in the diesel mech field, for example, never touching a leaking fuel line is rule #1 because of the immense pressures those are typically under, which will result in a hydraulic injection injury if ever touched, basically as Bytemeister already pointed out.

Industrial paint guns or grease guns also operate under high enough pressures to cause an injection injury.

[–] sol6_vi@lemmy.makearmy.io 1 points 1 day ago

TIL that's a big no thanks from me. I'll stay far and away from any leaking fuel lines.

[–] Harvey656@lemmy.world 29 points 3 days ago

Even if you don't like guns or even want to be around firearms, this is incredibly important information to understand. We live in a world of violence and weapons. Understanding how they work is important or at the very least how to not kill someone accidentally because you were ignorant.

If you see someone ignoring these rules, you know to look out, say something, or act. Whichever is the appropriate action. And, God forbid (or whateveryou might believe), you have to use a firearm, you understand the important rules of gun safety. Remember, you have to screw up multiple of the rules to cause a real deadly incident, if the gun goes off because your a dummy and put your finger on the trigger, but you had it pointed to the ground then likely everyone is okay and you are just an idiot. Safety first, always

[–] AA5B@lemmy.world 13 points 3 days ago

….. And don’t go out in the woods during deer season because there’s always someone treating a deadly weapon all too casually

[–] dhork@lemmy.world 15 points 3 days ago (1 children)

These are good practices for anything that shoots projectiles, not just weapons. I replaced some baseboard trim in the house a few months ago, and was extremely careful regarding where I pointed the air nailer, particularly when it was under pressure.

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[–] qyron@sopuli.xyz 19 points 3 days ago (10 children)

This just happened. Could not ask for better.

And now, for the obligatory drivel:

I live in one of the countries where more guns are owned and kept by civilians in Europe and the times I've seen one, it was on a police officer belt or on a museum.

Portugal (I was surprised when I learned this) has a lot of guns in civilian hands, mostly small handguns and hunting rifles, mostly shotguns and carabines.

The average hunter - I live in a somewhat rural area - stores guns empty, with trigger locks in place. And having more than one gun requires a gun safe, that is routinely inspected by police. Handguns have to be stored in lock boxes or safes unloaded. Ammunition must be stored separately and outside a minimal range of the guns.

Secret storage compartments are forbidden. Open carry is forbidden. Concealed carry is mostly standard here but manifesting it, with no reason, is a serious crime.

Gun violence is not rampant here, regardless what sensationalist news outlets and social networks desinformation campaigns try to do.

Most people never see a gun their entire life and if confronted with one will instantly call the police for safe removal.

So... I appreciate this kind of topic but it always strikes me as unnecessary for the average reality.

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[–] zr0@lemmy.dbzer0.com 13 points 3 days ago (1 children)

Rule 0: Don’t fucking handle with guns in the first place, if you don’t know the basic rules.

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[–] Lushed_Lungfish@lemmy.ca 11 points 3 days ago (5 children)

I'd offer this as well: if you don't have to pick up a gun, don't pick one up.

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[–] termaxima@slrpnk.net 6 points 2 days ago* (last edited 2 days ago)

In other words :

  1. Gun can go bang ! Scary.
  2. Point gun at bad guy, never good guy.
  3. Fingy behave until bad guy show up.
  4. Good guy close or behind bad guy ? No bang !

(This is meant to make the rules easy to remember, not to make fun of them)

[–] SaneMartigan@lemmy.world 16 points 3 days ago (6 children)

Another rule - If you're actually firing a gun and never have, only load one bullet. I've seen plenty of videos where someone fires a second accidental shot because they weren't ready for the recoil. More of an issue with bigger caliber guns but firearm negligence can be fatal so don't fuck about.

[–] silentjohn@lemmy.ml 1 points 1 day ago

I have never once seen this in a controlled range environment.

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[–] RightHandOfIkaros@lemmy.world 19 points 3 days ago (1 children)

Treat the barrel of a gun like it has an infinite length death laser pointing out of it at all times.

No, it doesn't matter if you just unloaded it, or saw someone else unload it. The barrel stays pointing down range and away from people.

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[–] DarkDinner@quokk.au 16 points 3 days ago (13 children)
  1. Don't live in America.
  2. You won't need to know about guns unless you really want to.
  3. Seriously, you're likely to never see one in real life, so it's all good.
  4. ...
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