How are these SKS magazines pinned?

[Dorian Gray]

I'm just curious, how are these magazines pinned: http://westrifle.com/wrstore/index.php?main_page=product_info&cPath=22&products_id=2125&zenid=6ff431f2d610031049db61fdfee3feb5

I would like to pick up a few mags that are pinned through the follower and not through the bottom of the magazine and i'm curious to see if these are what i'm looking for.

Thanks.

 

[ostrof]

Same question +2 mags