Quoted:
Yes.
On single stack bolts the portion that strips the round from the mag is much smaller.
Never knew that. Just compared my wasr 10 that i converted to double stack and its bolt is narrower across the bottom than my other romanian bolts.
Are all WASRs this way?
Any functional difference between the two?
I only ever owned one WASR, not sure if they are all like that or not, but mine was. I know they come into the country with a single stack mag well, so I imagine they likely are, but am not 100% certain.
It can cause feed issues. The PAP rifles and pistols are hit or miss with having feed issues and they come with single stack bolts. WASRs seem to run well with single stack bolts, you rarely here of issues with it.