Mega Rad Gun Thread

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MrJokerRager said:
I thought it was a meme, holy shit it's real.

I will give him kudos for calling it a semi auto rifle but holy shit.
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Yeah that was right after sandy hook iirc. Everyone has been laughing for years at him. Seriously to even get any should soreness from shooting an ar, I've had to shoot several hundred rounds in one go, and even then, 5 shots of buckshot will feel worse.
 
Techpriest said:
I’m wondering if some prankster slipped him a .308 AR
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Hmm, he doesn't mention in the article what calibur was used but it looked like an AR with those old school carry handles.

And he was firing it from a standing position it seems like so I can see the 308 giving him a big kick.

However he is also in an indoor range compared to outdoor so even if it was 5.56, the echoes and noises would fuck with him harder compared to outdoor.
 
MrJokerRager said:
Hmm, he doesn't mention in the article what calibur was used but it looked like an AR with those old school carry handles.

And he was firing it from a standing position it seems like so I can see the 308 giving him a big kick.

However he is also in an indoor range compared to outdoor so even if it was 5.56, the echoes and noises would fuck with him harder compared to outdoor.
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There’s a decent amount of .308 builds with a carry handle out there, essentially retro AR-10 style ones for collectors/competition shooters and for fudds who think .223/5.56 is for pussies but can’t afford an M1A. If he’d been given one of those with a 16 inch barrel at an indoor range, I can see what happened happening.

EDIT: Especially if he’s left eye dominant. As a left eye dominant shooter it can get a bit disorienting, but you get used to it. If this is someone who’s never shot before and is starting with a right handed semi-auto rifle with a full power cartridge, and his shooting stance isn’t that great, there you go. I get a bit jittery shooting for long periods anyway, because loud noises aren’t something I’m fond of. It’d really suck if someone brought me to a range, gave me a short barreled .308, and told me to go nuts.
 
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MrJokerRager said:
Firing an AR for the first time being felt like being punched in the face but I survived using the weapon of mass destruction according to democrats.

Also are hybrid muzzle brake and compensator great to use compared to a muzzle brake only or compensator only.
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It's .223, the standard flash hider is just fine unless you need muh split times on the 3gun course. Not flashbanging yourself is worth the price of your gun still being totally controllable imo.

I have a theory that recoil has more to do with gas pressure and buffer weight more than muzzle brakes but I don't care enough to test it. At least muzzle brakes scare children and make your gun unusable indoors, two important aspects of practical shooting.

EDIT: I forgot: prolonged exposure to muzzle brake blast can also increase your chances of retinal detachment. That concussive force does not mess around.
 
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Blasterisk said:
It's .223, the standard flash hider is just fine unless you need muh split times on the 3gun course. Not flashbanging yourself is worth the price of your gun still being totally controllable imo.

I have a theory that recoil has more to do with gas pressure and buffer weight more than muzzle brakes but I don't care enough to test it. At least muzzle brakes scare children and make your gun unusable indoors, two important aspects of practical shooting.
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Thanks for the information, fren.

Problem is that Flash Hiders are considered illegal here in California if caught with one on an AR.
 
I'm at the big-box sporting goods store right now. The poor clerk stocking the ammo is being surrounded like vultures around carrion.
 
MrJokerRager said:
Thanks for the information, fren.

Problem is that Flash Hiders are considered illegal here in California if caught with one on an AR.
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This is going to sound unhelpful, but...

Can you leave California?
 
I normally don't post pics but I love this new arrival from Serbia.
20210410_173933.jpg
 
MrJokerRager said:
Problem is that Flash Hiders are considered illegal here in California if caught with one on an AR.
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only on "featureless" builds, as they are considered an "assault weapon" feature as per CPC 30515 (a) (1). ergo they are legal to own, use, manufacture, et c as long as they are not assembled on a semiautomatic centerfire rifle that does not have a fixed magazine. "fixed magazine" meaning the requirement to disassemble the firearm action (AB 1135 & SB 880).

there are many designs of linear compensators that direct energy forwards to stabilize the rifle, and have the "unusual" side effect of redirecting gases in such a way as to minimize flash.
 
Blasterisk said:
It's .223, the standard flash hider is just fine unless you need muh split times on the 3gun course. Not flashbanging yourself is worth the price of your gun still being totally controllable imo.

I have a theory that recoil has more to do with gas pressure and buffer weight more than muzzle brakes but I don't care enough to test it. At least muzzle brakes scare children and make your gun unusable indoors, two important aspects of practical shooting.
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Three factors come into play with recoil - charge weight, gun weight, and gas direction. First, charge weight: this is the load of powder in your particular cartridge. If you took high school physics, and remember anything, you should remember Newton’s laws. In specific, we need to talk about two of them, the second and the third.

The second law is that force is mass times acceleration. This is the law that dictates how much force a projectile is putting out and how much is needed to send it at the desired acceleration. In a firearm, this force comes from the chemical reaction of the powder igniting. This ignition sends gasses and pressure in a direction, specifically down the barrel. This comes to Newton’s third law, for every action there is an equal but opposite reaction. This is the basis for recoil. Simple math tells you the larger the projectile or the faster you want to throw it, the more force you need, so the larger the charge. This is why a bigger bullet means generally, more recoil.

So why does gun weight matter? Well, depending on how your system is set up, it might transfer energy from the expended projectile into cycling the gun itself, or siphon off the gases produced to do the same thing. This involves moving parts, but the bigger movement is well, the equal but opposite reaction. This is where inertia and the second law again comes into play. The more mass you have, the harder it is to move. Weight is a pretty good correlation to mass. The heavier your gun, the less recoil force you feel, as more energy is needed to propel it back than is produced.

We go back to the third law for our last bit. As the projectile leaves the barrel, the gasses go out of the end, exerting force on you. The shorter the travel time down the barrel, the more force these gases have. Every action has an equal and opposite reaction, so as they go straight out, the forces also go straight back. The muzzle break directs some of the gasses away from that straight out path, thus reducing that source of force and with it, recoil.

This is pretty basic and doesn’t get into other math, and I might have gotten a bit wrong, but this should explain how recoil actually works and why muzzle breaks are still going to be a reduction to it.
 
Techpriest said:
As the projectile leaves the barrel, the gasses go out of the end, exerting force on you.
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minor correction: the exiting gases are not the cause of recoil, but the initial burning of the powder charge that exerts pressure in all directions is, as the expanding hot gases must overcome the inertia of the projectile (as a typically smaller mass) and the inertia of the combined shooter/rifle (as a typically larger mass). while it's true that reciprocating masses or diverted gases are commonly used to complete the cycle of operation, that is a contributing factor (and possibly an additive force) to perceived recoil rather than the cause of it.

consider the "recoil" that is felt (or rather, not felt) when shooting a blank, to the point that recoil-boosters are needed (blank firing adapter). without the transmission of energy into a projectile, there is too little pressure in the system to create the energies needed to overcome the combined inertial mass of the shooter/rifle in a significant way.

or how a recoilless rifle overcomes recoil when firing a projectile by minimizing pressure containment or using some kind of counter-mass to greatly increase the inertia of the shooter/rifle mass-body.
 
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Club Sandwich said:
minor correction: the exiting gases are not the cause of recoil, but the initial burning of the powder charge that exerts pressure in all directions is, as the expanding hot gases must overcome the inertia of the projectile (as a typically smaller mass) and the inertia of the combined shooter/rifle (as a typically larger mass). while it's true that reciprocating masses or diverted gases are commonly used to complete the cycle of operation, that is a contributing factor (and possibly an additive force) to perceived recoil rather than the cause of it.

consider the "recoil" that is felt (or rather, not felt) when shooting a blank, to the point that recoil-boosters are needed (blank firing adapter). without the transmission of energy into a projectile, there is too little pressure in the system to create the energies needed to overcome the combined inertial mass of the shooter/rifle in a significant way.

or how a recoilless rifle overcomes recoil when firing a projectile by minimizing pressure containment or using some kind of counter-mass to greatly increase the inertia of the shooter/rifle mass-body.
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The bit about the inertia and gas effecting the action was more an explanation of how self loading systems work, rather than those being part of recoil or the reason for it - sorry if I needed to clarify that a bit more. Gasses are still the primary way through which a recoilless rifle has no recoil, similar to a rocket launcher - back blast is a thing after all. I might need to edit what I wrote for clarity later.
 
Techpriest said:
Three factors come into play with recoil - charge weight, gun weight, and gas direction. First, charge weight: this is the load of powder in your particular cartridge. If you took high school physics, and remember anything, you should remember Newton’s laws. In specific, we need to talk about two of them, the second and the third.

The second law is that force is mass times acceleration. This is the law that dictates how much force a projectile is putting out and how much is needed to send it at the desired acceleration. In a firearm, this force comes from the chemical reaction of the powder igniting. This ignition sends gasses and pressure in a direction, specifically down the barrel. This comes to Newton’s third law, for every action there is an equal but opposite reaction. This is the basis for recoil. Simple math tells you the larger the projectile or the faster you want to throw it, the more force you need, so the larger the charge. This is why a bigger bullet means generally, more recoil.

So why does gun weight matter? Well, depending on how your system is set up, it might transfer energy from the expended projectile into cycling the gun itself, or siphon off the gases produced to do the same thing. This involves moving parts, but the bigger movement is well, the equal but opposite reaction. This is where inertia and the second law again comes into play. The more mass you have, the harder it is to move. Weight is a pretty good correlation to mass. The heavier your gun, the less recoil force you feel, as more energy is needed to propel it back than is produced.

We go back to the third law for our last bit. As the projectile leaves the barrel, the gasses go out of the end, exerting force on you. The shorter the travel time down the barrel, the more force these gases have. Every action has an equal and opposite reaction, so as they go straight out, the forces also go straight back. The muzzle break directs some of the gasses away from that straight out path, thus reducing that source of force and with it, recoil.

This is pretty basic and doesn’t get into other math, and I might have gotten a bit wrong, but this should explain how recoil actually works and why muzzle breaks are still going to be a reduction to it.
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When you look into Sullivan's post AR-15 work in Singapore, the basic math of gun/charge/bullet only applies to manually operated arms.

Otherwise, an AK wouldn't/couldn't kick less when the gas port size is reduced. The impulse of the bolt+carrier hitting the rear of the receiver is absolutely a factor.

Consider holding a 12ga spaced off your shoulder before firing -- if you have already tried this, you will know that the theory of "it will have time to decelerate" is just a theory.
 
Club Sandwich said:
only on "featureless" builds, as they are considered an "assault weapon" feature as per CPC 30515 (a) (1). ergo they are legal to own, use, manufacture, et c as long as they are not assembled on a semiautomatic centerfire rifle that does not have a fixed magazine. "fixed magazine" meaning the requirement to disassemble the firearm action (AB 1135 & SB 880).

there are many designs of linear compensators that direct energy forwards to stabilize the rifle, and have the "unusual" side effect of redirecting gases in such a way as to minimize flash.
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My rifle was in featureless form and took a while to get used to the sharkfin. I am looking to replace the sharkfin with like deeply angled grip like a old school rifle grip. Apparently a forward vertical pistol grip is not allowed but angled grips and hand stops are okay.

Also the biggest problem is magazines up to 10 rounds are allowed and those fake 30ags that carry 10 are sold out.

Only a final note, mine came with mlok rails, which at this point I hate for accessories. I managed to attach the handstop even though the t nuts are not perfectly perpendicular but it fits and is tight.
 
MrJokerRager said:
My rifle was in featureless form and took a while to get used to the sharkfin. I am looking to replace the sharkfin with like deeply angled grip like a old school rifle grip. Apparently a forward vertical pistol grip is not allowed but angled grips and hand stops are okay.

Also the biggest problem is magazines up to 10 rounds are allowed and those fake 30ags that carry 10 are sold out.

Only a final note, mine came with mlok rails, which at this point I hate for accessories. I managed to attach the handstop even though the t nuts are not perfectly perpendicular but it fits and is tight.
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it sounds like you want a Thordsen FRS stock, although there are various other options out there. featureless AR-15's can use a detachable magazine of whatever size you like. you are only limited to 10 round magazines for semiautomatic centerfire rifles that have at least one other assault weapon feature, or the rifle has a "fixed magazine" as currently legislatively defined, or if the magazine itself is newly imported or manufactured.

iirc magpul makes fairly inexpensive m-lok rail sections, but there are lots of handguard options depending on what you want to do.
 
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