I used an iPhone mechanical watch app and measured significant magnetism of 200+uT on the takedown lever and the takedown safety release lever.
Should I be concerned?
I was able to demagnetized to a background level of 50uT.

And I might care why?

A little too much time on our hands, have we? Even if parts were magnetized, why would it matter? There is nothing to worry about if it functions properly.

May I ask how you demagnetized it? I would think that would require some kind of laboratory equipment, not usually found in a household.

Stop it with this.
Right now.
Capiche ?

Search for “demagnetizer,” and many results come up.
For small parts like the ones mentioned, possibly even the <$10 ones might work (if anyone else has the same concern besides the topic starter who evidently resolved his concerns).

I have a little demagnetizer which was designed for screw driver tips. It would work fine on these parts. Was cheap. But I can’t imagine caring till the OP tells us it’s affecting my accuracy or something

I used a $13 Amazon watch demagnetizer. SIG needs to do a better job demagnetizing their small parts. There is no reason to spread magnetic contamination to unsuspecting SIG users.
Basic 101 in good machining practices. Clean up before u deliver ur product.

Also, I can no longer wear my Rolex watch to the target range. Lol.

Unbelievable

quote:

Originally posted by Patrick0525:
There is no reason to spread magnetic contamination to unsuspecting SIG users.

I am fairly sure that the OP needs to check their meds.

It's Trump's fault. He colludes with Russia and our M17s and M18s are primed to fail when the Commies throw a switch at the start of their invasion.

quote:

magnetism of 200+uT

Apparently the WHO is interested in Electromagnetic fields and its effect.

HEALTH EFFECTS
For static magnetic fields, acute effects are only likely to occur when there is movement in the field, such as motion of a person or internal body movement, such as blood flow or heart beat. A person moving within a field above 2 T can experience sensations of vertigo and nausea, and sometimes a metallic taste in the mouth and perceptions of light flashes. Although only temporary, such effects may have a safety impact for workers executing delicate procedures (such as surgeons performing operations within MRI units).

Static magnetic fields exert forces on moving charges in the blood, such as ions, generating electrical fields and currents around the heart and major blood vessels that can slightly impede the flow of blood. Possible effects range from minor changes in heartbeat to an increase in the risk of abnormal heart rhythms (arrhythmia) that might be life-threatening (such as ventricular fibrillation). However, these types of acute effects are only likely within fields in excess of 8 T.

It is not possible to determine whether there are any long-term health consequences even from exposure in the millitesla range because, to date, there are no well-conducted epidemiological or long-term animal studies. Thus the carcinogenicity of static magnetic fields to humans is not at present classifiable (IARC, 2002).

quote:

Originally posted by HRK:
A person moving within a field above 2 T can experience sensations of vertigo and nausea, and sometimes a metallic taste in the mouth and perceptions of light flashes.


Possible effects range from minor changes in heartbeat to an increase in the risk of abnormal heart rhythms (arrhythmia) that might be life-threatening (such as ventricular fibrillation). However, these types of acute effects are only likely within fields in excess of 8 T.

Yes, but keep in mind that 2T or 8T are far greater than a few hundred μT.

1 Tesla (T) = 1 million Microteslas (μT)

So 2T is 10,000x higher than the measured 200 μT on the P320. And 8T is 40,000x higher.

quote:

It is not possible to determine whether there are any long-term health consequences even from exposure in the millitesla range

Even Milliteslas (mT) are much larger than Microteslas (μT). 1 mT = 1,000 μT. So the P320's magnetism would need to be 5x higher to even enter into the Millitesla range.


Keep in mind that many electronic devices and appliances emit a field that's several hundred or a few thousand Microteslas when in use. So you're getting 2x-10x as much exposure from something like running your vacuum cleaner than you would if handling that P320.


(Also note that using a cell phone, which constantly emits its own electromagnetic field, to try to measure nearby magnetism may not be the most accurate method... )

Maybe we're on to something here. I'm going to disassemble and test all of the powertrain components on my personal vehicle.

Lot of work, but I'd rather err on the side of caution,

I mean, better safe than sorry, amiright?

Besides, if the car companies are spreading magnetic contamination to unsuspecting drivers, the world needs to know!

I recommend standing in the park with a large placard while haranguing passersby as the best method to get the word out.

200+uT?
Pretty sure the monitors I'm starring at right now have a more powerful magnetic field...

An excellent Karma for the OP:
A magnet gun holder!