Collapsible vs Adjustable AR Buttstock

[MikeFF]

I live in NJ and the all powerful and knowing state government has decided collapsible stocks are too dangerous for my own good. I was wondering if anyone has any info regarding adjustable stocks.I found one that is designated adjustable in the ad. ,and will replace an A2 buttstock, The butt and cheek are adjustable, my question is would this be considered collapsible and illegal or adjustable and good to go.I cant find any info that specifies if adjustable falls into the illegal category.

Thanks Mike