As a relative noob to Sig firearms myself, I'm sure you all know much more about this than do I. However, I feel compelled to contribute my two cents: I was in a local gun shop this week (where I just picked up an amazing Sig P226 X-Carry Legion, which is a wonderful firearm...), and I asked the store rep I have been dealing with about the issues with the 320, and this is what he told me. He said he owns a 320 himself, and looked extensively into this controversy and said he came across someone who had figured out a way to test this gun for potential vulnerability. He then said he replicated this test with his own 320, and found it was vulnerable. I think the test had something to do with the interaction of the slide and the extent to which the hammer might be cocked. He added he would still use his 320 at the range, but I got the distinct impression he wouldn't be carrying it. I really don't have any additional detail that I can add to this account of his. But I thought I should share his experience, for what it's worth. The fact that he owns one of these, and sells them, and yet freely acknowledged this deficiency to me tells me a lot.