1. What exactly does that side safety disengage/block/ stop etc.?
Blocks the sear as said.
2. How does one accidentally knock this off?
My guess would be body movement?
3. Is this even a real issue, or is it just something to deter 1911 purchases?
No this is not a real issue go to some of the 1911 forums and read up never heard of it happening on any of them. Doesn't mean it can't or hasn't happened just that it definitely isn't a common thing.
4. How does that safety work? (Do you push it up to fire, or down to fire?)
Down is off safety or ready to fire.
5. How can this issue be nullified?
This is not a issue as said above. I have 2 1911's and haven't had this problem. If you did come across this problem it would more than likely be because of the spring being weak and would need to be replaced. IMO
Blocks the sear as said.
2. How does one accidentally knock this off?
My guess would be body movement?
3. Is this even a real issue, or is it just something to deter 1911 purchases?
No this is not a real issue go to some of the 1911 forums and read up never heard of it happening on any of them. Doesn't mean it can't or hasn't happened just that it definitely isn't a common thing.
4. How does that safety work? (Do you push it up to fire, or down to fire?)
Down is off safety or ready to fire.
5. How can this issue be nullified?
This is not a issue as said above. I have 2 1911's and haven't had this problem. If you did come across this problem it would more than likely be because of the spring being weak and would need to be replaced. IMO