Ok I had to stop reading half way through. First of all, I would advise you not to even show you guns to people who you don't consider your close friends. That's how houses get robbed. Even if it's not from the guy who you showed the guns to. Second, never leave anyone alone, especially someone who you don't know well, with any gun. And third, my family comes from a long line of hunters and competitive shooters, ex marines and the like. When you hand a gun to someone, even though they watched you clear it, they shoud check it again, before even looking at it. I took a couple of guys who worked for me for years to me uncles home, "he has his own keys to a private club", he showed a gun he had just finished to the guy , only after going over the safty aspects I mentioned. The one guy "also ex-marine', took the gun, and failed to rack it to safty check it, and my uncle bitch slapped the guy, right there. My uncle was in his late 60's at the time, i'll never forget it, and my friend won't ever forget to check a gun the proper way again. After we left, he said your uncle was a DI right, I said yep, and he thanked uncle Mike for the valuable lesson. Enough said