> Glocks, two built-in safeties internally that would prevent misfires. The only way they would fire is if the trigger is pulled. Period.

Two built in safeties, plus a half-cocked striker instead of fully cocked like Sig. Another big difference is that one of the safeties is a physical thing sitting in between the striker and the primer. The equivalent on a sig 320 is a physical thing sitting in front of a lug attached to the striker, not actually in between the striker and the primer. That makes it a single point of failure, because if the lug shears off of the striker, the gun immediately discharges.

The big failure case for a Glock is something (drawstring, etc) getting into the holster and pulling the trigger. If you commit to never holstering without going really slow and shining a light down in there to verify nothing is getting at the trigger, it's safe. Which works if you just never take it out of the holster except at the range. Remove the holster and gun as a unit, stick holster and gun together in a safe, etc.