They do....meaning if the gun is dropped or slammed down, the internal safety mechanism will not allow the gun to discharge. HOWEVER just like on the Springfield & Kahr, & others, the safety mechanisms are meant to be OVERRIDEN when the trigger is pulled in a shooting position. In other words, you WANT the gun to go off when the trigger is pulled because generally that is to mean you are intentionally shooting at something, hopefully the target. Also you NEVER put your finger on the trigger until or unless you are ready to shoot. Place your finger alongside the barrel of the handgun until ready to shoot NOT ON THE TRIGGER.
So I will guarantee you that the idiot DEA agent Lee Paige had his finger on the trigger as he was then stupidly shoving his handgun into a TIGHT side holster and therefore the gun went off because he pulled the frikkin trigger!!!! Not the gun's fault!!! His "negligent discharge" should have resulted in getting fired as a DEA agent.
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...and as Seargent Stryker rightly said “Life’s tough...it’s even tougher when your STUPID!”
RIP John Wayne!