So many of the ideas on here are contrary to each other. Explain yourselves.
>>30434602
Its because poly frames on pistols were designed from the ground up around using that material, while AR poly lowers were originally designed for aluminum but then directly copied to a polymer construction without metal reinforcement
>>30434648
>pic related
>>30434602
>pistols are rifles
>>30434648
AR-15 was designed for steel lowers
>>30434602
>different kinds of guns require different building methods and materials
>>30434663
I have yet to see a gun that can successfully survive a squib detonation
>people actually believe polymer framed handguns are as strong as steel
Pro-tip: The polymer on your Glock is not the same as the polymer made and tested in high tech laboratories.
>>30434687
>le squib
>>30434668
AR-15 lowers don't contain much pressure.
>>30434676
Exactly. For glocks to properly detonate they must have a nice polymer.
>Rifle calibers have comparible pressures to pistol calibers
The only chart you need to see before you make the decision between a polymer framed anything versus ANY type of metal frame is this
t.aerospace engineer shooter
>>30434668
>AR-15 was designed for steel lowers
>>30434648
>>30434668
>>30434676
>>30434687
>>30434719
>All these tactifags defending their poor choices
>>30434726
so what that graph says is that we should be making AR15 out of glass?
>>30434726
SPEAKING OF WHICH
How does the Aluminum alloy frames on Sigs compare to a steel frame?
Also on the sigs, is there a metal framed, striker fire, CC sized 9mm Sig? Both the p938 and p239 have exposed hammers. Really I want something like the p320 compact without the polypocket frame.
>>30434771
>(you)
>>30434726
So, guns should be made out of glass?
>>30434726
Your essentially correct
t.engineering physics shooter
>>30434726
If you were actually an engineer, you would know that you shoot for as close to the minimum spec as possible to reduce costs.
t.mechanical engineer shooter
>>30434602
>AR is infallible and totally reliable
>Constant debate over what parts/features/brands are shit
>AK is infallible and totally reliable
>Constant argument over which manufacturers/countries are shit
>>30434887
>guns don't kill people
>the gun free zone made them targets
>metal frames on pistols aren't stronger than polymer
When has anyone EVER said that?
>>30434726
Does this mean I could have a polished copper alloy lower?
>>30434602
Isn't shitposting a violation of the rules?
>>30436431
Nah man, Australians can only load like one thread a day and with their inborn fear of scary salt rifles, we don't get much action here
>>30434840
Metallic glasses are amorphous metal alloys in which, through a combination of carefully chosen alloying elements and extremely rapid cooling processes, the metal hardens without forming any crystalline structures. It's literally glass made from metal. Shit's crazy strong, but not ductile and when it fails, it fails like glass, shatters without warning.
Metallic glass composites are a combination of metallic glasses and regular crystalline metals, with the intent being to get some of the strength of metallic glasses with the familiar properties of regular metal.
>>30434726
now make a plot of specific fracture toughness vs specific yield strength
t. materials engineer
Jet fuel can melt polymer lowers.
>>30435603
When we developed plasteel.
>>30434602
>there's people with different points of view on /k/
I thought there was only one guy who posted here.
Not necessarily /k/, but had this discussion with a co-worker
> Violent crime at all time lows
> "You should look into getting your CHL, man. What if something happened?"
> "Just because I'm in my home doesn't mean the gun comes off. Shit happens all the time."
For the record, shit does not "happen all the time" in our suburb where we live and work. It's why I moved my family here. What is the point of relocating somewhere so shitty you need a gun on your person 18 hours a day.
>>30434954
>coherence
What is it?
>>30438691
>this guy doesn't carry in the shower
>>30438691
same tier as people who think "i live in a nice neighborhood, i don't need to lock my doors"
>>30434602
Your thread is dogshit so I'm hijacking it with a question.
All opinions about .22lr for self defense aside (I know it's shit), I do enjoy looking at them from time to time in case I decide to switch from my Browning plinking gun.
It seems like all the semi-auto 22's are built so large for how weak they are. The smallest one is like the size of a .380 with the average sized ones being more along the lines of a 9mm. Is there some reason for this?
>>30438912
I was about to say no one goes that far, but my parents live in a small town so small and remote, they do not lock their doors, even when leaving town.
>>30434771
shitposter kys
>>30438691
Go read up on the BTK serial killer.
>>30434687
I though the AR-15 lower doesn't take any significant stress?
>>30439929
Thats what happens when you're shooting a really shitty 38SW with barely any pressure behind it into a hardened steel barrel. Squibs all day err day.
>>30439929
For anyone that's curious, that's the barrel of a Webley No.II in .38 S&W.
The low pressure rounds got stuck in the barrel, and as each one is fired they just get stuck behind the previous one since they lack the power to cause any significant structural damage. The cylinder gap allows gas to vent to the sides, so bullets can keep getting stuck without blowing up the gun entirely. The fun part of this image is seeing that there are eight squibs. Not only did he fire an entire cylinder, but he fucking reloaded and shot two more rounds before realizing something was up. If he had fired once more, the gun would have seized up entirely since the bullet would be lodged between the cylinder and barrel. Either that, or it would allow the cylinder to turn and the shot after that would detonate the cylinder since the bullet has nowhere to go.
>>30434668
>AR-15 was designed for steel lowers
never once.
armalite was created by fairchild to make "space age" guns out of aircraft materials.
>>30434602
>Why is it ok to build kitchen knives out of stainless steel, but swords must be made out of carbon steel.
>>30440195
Stainless is too soft for swords. It would just bend like a big floppy dildo the first time you hit something with it.
>>30440212
wrong....
stainless is harder and more brittle. Mall ninja katana are stainless and break when you hit stuff wrong because they are so brittle and hard.
Think diamonds, super hard super brittle
>>30434602
>Gun control doesn't save lives! Restrictions on weaponry has no affect!
>only one person has ever been murdered with a civilian owned legal machinegun. The system works so open up the registry!
>>30438926
Most 22 pistols are target guns so the size and weight helps with accuracy and reducing recoil. That's my guess I don't really know though
>>30440246
The hardest metal known to man?
>>30440246
Yeah I was going to say.
Kitchen knives are hard as balls, otherwise why are they so thin?
I always figured it was because stainless becomes more brittle when forged to the same hardness, is stainless actually ALWAYS harder, for example is a stainless kitchen knife harder than tool steel?
>>30434726
>tfw no TZM alloy firearms
>>30434887
Oh you didn't drop 3k on a DD or a Noveske? Your rifle is SHIT
Oh you bought a WASR? Should have overpaid for an Arsenal like I did
Literally it's almost a show of who spent more on stupid shit.
I see tons of bullshit and not a whole lot of shooting.
>>30440312
Why are those thing exclusive?
The Nazis were doing good way before the alleged holocaust.
>>30440326
because they say the nazis are based for killing/being anti jew
6 MILLION MORE
HOLOCAUST NEVER HAPPENED
kek
>>30440246
Are you literally retarded or just pretending?
>>30438691
>hassling some guy because he likes carrying whenever he can and being prepared
>thinking he's safe because he lives in a place where the houses all look the same
Please fuck off. I bet you leave your gun in the car-- no, at HOME whenever you heave yourself into the crossover to haul your several asses to the nearest Red Lobster.
>>30440439
I think it is you who are the retarded one, my friend.
>>30440212
No. Carbon steel is "softer" than stainless steel. Well, I don't know if softer is the right word. It is more flexible and less rigid. Swords don't need to be extremely rigid, they need to flex or else they will just snap. Look at slow motion footage of full speed HEMA combat. The sword bend like "a big floppy dildo." My point was that different materials are better for different purposes. You shouldn't build a sword with stainless steel, just like you shouldn't build an Ar-15 with a polymer receiver.
>>30440519
Swords do require some flex but they also need to return to their original shape afterword. British proof test and all that. But stainless lacks that ability for the most part. It will bend and it will stay bent.
Don't the polymer AR lowers with the metal inserts in the right places just as strong and durable as the aluminum lowers? And polymer pistol frames have metal inserts for locking blocks, rail, etc. Nothing is riding against bare polymer.
OP is a retarded faggot, per usual.
>>30440439
>>30440498
You're both idiots.
>>30440369
I see what you're trying to say, but your image doesn't quite capture that.
People have a whole host of reasons for thinking Nazis were based, not even /pol/tards are going to go on and on about how the Nazis were ONLY based because of Jew killing (for those who are willing to admit it)
>>30434711
>AR-15 lowers don't contain much pressure.
the buffer tube retainer takes a lot of stress at the point where it protrudes from the rest of the lower on account of the reciprocating mass of the bolt.
>>30434602
following from what I said to the other guy:
polymer lowers following a typical ar lower design will be prone to fail at this juncture on account of the original design expecting the lower to be made from aluminium.
when polymer designs are modified from the original spec to reinforce this area, the issue disappears. several designs have done just this and work fine such as fosscad's 3d printed "bolt" lower.
>>30440444
> hassling some guy
Try the other way around, bud. I don't care if he carries. But much like you, the fact that I won't seems to make him salty.
>>30439906
Yeah I was in town when they caught him. shit was cray.
>>30438311
This
>>30438969
>small and remote
AKA an area with a horrendously slow police response time and a perfect burglary target. Call in an accident on the other side of the county, everyone goes, break into 3-4 houses in the midst of nowhere (and by break in I mean walk in the unlocked doors because hurr durr I live in the middle of nowhere so I don't have to lock my doors).
It'll catch up with them sooner or later.
Are there actually people who think that polymer pistol frames are just as strong as steel frames?
>>30441999
It's eastern New Mexico, and not near a major highway. Statistically speaking, it might catch up with their great grandkids, assuming we all moved back into the same house.
The boonies in the Midwest are just stupidly safe (and horrifically boring).
>>30442101
I've worked in law enforcement for 10 years in the midwest. We take more burg reports than you'd imagine. People think the only action that happens is in the newspaper and they'd be astonished to know we take over 70,000 calls for service yearly.
>>30442101
For the record, a neighbor had his lawn mower stolen once, but since the thief lived further down the road and was using it to now his own lawn, recovery was relatively easy.
>>30442121
What was the population density for your county, though? Out in western Texas/eastern New Mexico, we're talking population densities of <3000 people for the entire county.
>>30442184
Not nearly that sparse.
All I'm saying is that leaving your house, vehicle, or outbuildings unsecured is irresponsible, ignorant, and sooner or later you'll be the victim of a crime. The overwhelming majority (probably 90%+) of our theft and burg reports are unlocked/unsecured property.
When I take a report of someone that had their vehicle gone through or shit stolen from their house and they're just astonished that this atrocity happened to them it makes my blood boil. Occasionally I have the chance to say something like "Do the locks actually work on your house or do you just trust everyone?" and almost without fail get a pissed off look in return.
>>30434788
No you dip, stick with Aluminium. It's cheap and light. Titanium is also ok.
>>30440519
HEMA sparring is done with flexible training swords to avoid injury, they flex more than real swords do generally when you stab someone.
>>30434874
Yeah, this is more of a "physicist's" answer. If he said civil engineer I would have called him on his BS right away.
>>30437871
ah yes, just like plastoid armor in Star Wars.
>>30435835
Actually yes, but I don't think anyone makes one.
>>30437785
Man, thanks for explaining that to me, I never had time to study in school, since I was so busy fucking all your crushes.
>>30437785
that sounds rad as hell
>>30434726
so my AR pistol grip should be made of metal??? thanks for the heads up champ
>>30434663
Chamber Support + polygonal rifling
Glock barrels have a loose chamber for feeding reliability, and have polygonal rifling which causes lead buildup in the barrel if shooting lead reloads, which results in pressure spikes.
Combine those two with a 165gr .40 S&W cartridge with improper setback and you get a glocknade.
That is why you buy aftermarket barrels for glocks if shooting reloads.
>>30443524
All you are saying is that yes, glocks fail right out of the box. You shouldnt have to buy aftermarket parts to ensure that your gun doesnt blow up.
>>30443723
If we agree with you, will you go away?
>>30443723
no. i hate glocks.
but they work perfectly fine out of the box.
as long as your not using reloads.
>which is 97% of the target audience.
>>30443723
It's why in the instructions it says do not shoot reloads or cast lead projectiles
>>30440075
It was meant to demonstrate the strength of the barrel. No shooter is THAT stupid.
>>30434602
I hate my countrymen for being cowards, moral relativists and driving this country into the ground while deep down i hate this country more than any of them and want to see it burn brighter than Canada.
>>30434954
I've never once seen anyone on the board say "guns don't kill people" with any level of seriousness.
>>30440246
>there is exactly one type of stainless
>>30443774
>these mental gymnastics
>>30440369
Nazis also fought Stalin and FDR, so there's two more good reasons.
