Im sure this has been asked but I did a search and all I can find is people asking about Sigma to SD9 VE intercheability and trigger complaints/how much I like the trigger posts. A buddy of mine has an SD9 VE for sale cheap and I need a 9...cheap, so it looks like a perfect match except his is the 10 round model and i want the 16 round model. Are the magazines intercheable? Can the 10 round gun swallow the 16 round magazine? He tried to sell me on the BS that 16 round mag springs lose their tension (known not to be true), then he says the 16 round clips are "waaaaaaaay" more expensive, well I just checked, they're the same price, lol. So the last and final question is, do they fit? Thanks!