If you are really worried about your "friend" committing a crime with your gun they borrowed... then you probably need to re-evaluate your friendship.
Nope...even my sons use my guns here on our range but go home empty handed (unless they brought their own!). Sure, I've given both of them a number of guns over the years, but that makes them theirs, not mine and I wouldn't think of "borrowing" them. Friends? I offer some the chance to shoot on my range, but no borrowing. Same goes for my Harley...nobody rides it but me; and let's not even think about my chainsaw! Rod
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If I have a good friend that needs to borrow a vehicle for legitimate reasons, I most certainly would, just as if a family member or good friend needs to borrow a firearm to hunt with. Guns are material things and can be replaced, My friends and family are responsible folks that would fix or replace any damage.
I must be the odd man out as I will lend firearms, but only to people whom I implicitly trust.