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txinvestigator wrote: The example you gave where

the real deal wrote:Fire cocked weapon and cock

would describe a SINGLE action semi-auto.

Actually I wrote: Dual Action = Fire cocked weapon and cock --> fire weapon

The more grammatical way to type it would have been "Double Action has two functions = 1) Fire cocked weapon and, 2) Cock an uncocked firearm and fire weapon"

I don't know why I typed "Dual". I know better ;)

couzin wrote: ...you say either, I say neither, lets call the whole thing off...

It's a legitamite discussion...

Thanks all!

My definition of a DA firearm is that it is capable of cocking and releasing the firing mechanism with a full trigger pull. SA is one that has to be cocked manaully to be able to fire it. Yes, the Sigma I own does in fact have the same characteristics of the glock. A spring loaded firing pin that is pulled back and latched on the sear. When the trigger is pulled, the sear is pulled down and to the rear. This causes a "slight" additional reverse of the firing pin causing some additional tension. Once the sear has dropped down far enough, the firing pin slams forward to the reciever and strickes the primer.

nemesis, I believe my understanding of DA vs. SA is accurate. The methodology behind the firing mechanism is irrelevant. Internal, external, or lack of a physical hammer doesn't impact it's classification of Single Action or Dual Action. THat is the count of the functions the trigger is capable of.

Single Action = Fire cocked weapon
Dual Action = Fire cocked weapon and cock --> fire weapon

Thanks couzin. That is the answer I was hoping for.

Yes, I do clear it and put it to bed at night. This is because I have a Remington 870 with light attachment and buck shot for late night problems. I don't wake the easiest, so I need something that doesn't have to be lined up perfectly on the target.

Hi ya'll. I have been around firearms my whole life. Shooting them as a child, all they way up to now (31 yo). I finally submitted for the CHL. I am awaiting the processing now.

For CHL, and my only SA pistol at this time, is a S&W 9MM Sigma. I know, many of you have different opinions on S&W and the Sigma series, but that is what I have :)

The 9MM Sigma is a no safety, single action, hammerless, glock clone. The trigger is jointed, and is the only safety mechanism (if you can call it that). My question is this, should there be any concern over carrying it cocked? I am very comfortable and safe with guns, but the lack of a true safety concerns me. Previously I had a Ruger P89 9MM. It was a SA/DA with decoking safety.

I guess the root of my question is whether or not I should be concerned over the sear tripping or accidental firing while it is cocked for long periods of time. My intentions are to clear the weapong, load it, and cock it in the morning when I begin my day carrying. If this was a DA handgun, it would not be a big deal since I could chamber a round and DA the first shot.

Some of you might say, if you are more comfortable with the safety of a DA, you should buy one to carry. That may be the ultimate decision, but only if there is a concern over a no safety SA cocked weapon. Note that I am not concerned with accidently pressing the trigger. My holster, and my handling of firearms does not present that as a problem.

TIA