im answering #1 only. gun did not jam. the gun has what is called a slide lock switch. it turns a glock in to a bolt action. making it more than twice as quiet when fired. all you have to do is  1 have a have slide with a lock built in (least likely scenario) even tho b&t hush puppy is a real gun it does not fit the visual appearance of the shooters gun  2 the shooter purposely blocked the slide so he would have to manually rack the slide stopping the gun from sounding like a gun.  i dont expect you to know about this technique of silently killing soneone, but some of us and knew exactly what the shooter was doing.  this is the way you pull off a hit. if the shooter isnt already dead by who ever hired him. he will never be caught. suspect is on a plane back to israel  there was one failure to fully cycle that was cleared out with a rerack during the last shot.  i dont care about any of this. just pointing out what a professional sees image is what is called a slide lock switch. it is a glock switch that turn the gun bolt action the complete opposite to the nig glock switch that turns the full auto. this switch is one trigger pull shoots one bullet then you have to rerack the slide cycling the next round
United States