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Excaliber wrote:
The requirement to use the hand and finger movement that has been extensively trained to do one thing to execute a very similar movement to achieve a very different result with little training behind that second task certainly poses risks when the tool involved is a firearm.

Yes. And I just wanted to add, that this effect would be exacerbated when the user is under stress.

Excaliber wrote:

sjfcontrol wrote:

Excaliber wrote:

KC5AV wrote:

Excaliber wrote:single frontstrap mounted switch option..

Wow, that seems like a spectacularly bad design.

In and of itself, I don't agree. The same switch location is used on the best Crimson Trace laser grips and other similar devices with no documented issues that I am aware of. These devices are intended to be activated by a firm grip on the handgun which does not include movement of the trigger finger.

I suspect that some combination of violations of Rules 1 and 3 and the symmetrical hand clench phenomenon are bigger factors here.

It appeared to me it was designed such that you squeeze with the trigger finger to fire, or the middle finger to turn on the light.

That's exactly correct.

However, if one's finger is on the trigger or alongside the trigger guard instead of the frame to begin with, deliberately clenching the hand to turn on the light under the stress of an arrest struggle may cause involuntary movement of the trigger finger as well.

Yeah, I wasn't really commenting about the involuntary movement. If he is doing as trained, the trigger finger will not be on the trigger anyway, when trying to turn on the light. I was thinking that when the time came to turn on the light under stress, the more natural movement (and more trained movement) would be to put the trigger finger on the trigger and pull, rather than pulling with the middle finger. Thus it is a MISTAKEN movement, not an involuntary one. His BRAIN would tell his hand to use the wrong finger, because that is the more natural and trained response. An involuntary "clench" would have no negative effect as long as his finger's not on the trigger. A mistaken "command" to the wrong finger would have disastrous effect even if the finger wasn't on the trigger at the time.

Make sense?

Excaliber wrote:

KC5AV wrote:

Excaliber wrote:single frontstrap mounted switch option..

Wow, that seems like a spectacularly bad design.

In and of itself, I don't agree. The same switch location is used on the best Crimson Trace laser grips and other similar devices with no documented issues that I am aware of. These devices are intended to be activated by a firm grip on the handgun which does not include movement of the trigger finger.

I suspect that some combination of violations of Rules 1 and 3 and the symmetrical hand clench phenomenon are bigger factors here.

It appeared to me it was designed such that you squeeze with the trigger finger to fire, or the middle finger to turn on the light.

KC5AV wrote:

Excaliber wrote:single frontstrap mounted switch option..

Wow, that seems like a spectacularly bad design.

No kidding! About the only way it could be worse is if it was attached to the front of the trigger itself! A little pressure gets light, more pressure gets a BANG!