SHIELD DROP SAFETY ???????

robkarrob

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I started a new thread for this question.

Maybe someone here can explain S&W calling it a drop safety hazard. As I saw on the S&W website video, the lower half of the trigger may stick back, and not spring forward like designed. This does not allow the trigger safety tab to block the trigger movement. I know the internal workings of the M&P models well, including my Shield 40. How can this be classified as a drop safety issue. The striker blocker acts as the drop safety. If the striker blocker is not depressed, the gun will not fire. The trigger needs to be moved rearward about 80% of full travel, before the striker blocker will clear the striker, and then the trigger must be pulled back an additional 10% to allow the gun to fire (sear release).

Is S&W saying that if the lower trigger sticks back and the gun is dropped and hits in just the perfect spot, that the trigger could move far enough to fire the gun? No way that is going to happen. The trigger weight is too light and the trigger spring return tension would not allow the trigger to move to the break point. The trigger safety is that, it stops the movement of the trigger, if the lower half is not pulled. The trigger safety is in no way related to the striker blocker safety, other than the fact that the trigger is connected to the trigger bar, which has the tab to depress the striker blocker. The trigger safety prevents the trigger from moving back, unless depressed, and nothing else. How is this a drop issue??? I have always said the trigger safety is a useless safety, as it only protects the trigger from moving if something contacts the upper half of the trigger. Very hard for something to touch the top half of the trigger without also touching some part of the bottom half. Please explain this to me. Maybe I'm just too thick headed to understand calling it a drop safety issue !!!!

Thanks

Bob
 
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I read the thread, and it still does not change my thinking about it as a drop safety. I was a Mechanical Engineer, and have a some knowledge in these types of mechanical workings. I am not going to tell you I have figured the length of the trigger, the weight, in relation to the axis and pivot point, along with the force necessary to move the trigger against the resistance of trigger return spring, blocker pressure, and sear spring. I couldn't remember how to come close to figuring it. I worked in the BC period (before CAD and before computers). I'm sure there is a computer program that can easily compute it. It may fire if dropped from a high enough elevation to produce sufficient energy to offset the spring/drag/friction resistance, and landing on that perfect spot.

I would then guess if it is deemed a drop safety, that the Government Agency that sets the standards for and tests for such safeties, has agreed that if a trigger has such a device, it would be satisfied as meeting the standards. Without that safety, the gun would not fire unless landing on that perfect spot, at a much higher rate of speed, than would be generated from a 10 foot drop height. It is still a useless safety, especially as a drop safety, but required to meet another Government regulation.

Bob
 
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It's really just a CYA precaution in the bizarre chance that if dropped on it's rear with enough force to allow the trigger to travel rearward enough to fire the gun, the drop safety will prevent that.
 
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