New MP9 owner has a question about the trigger action.

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shikano53

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Hi all, I decided to start pistol shooting once again after a twenty year hiatus so I guess I'm starting from scratch again.
That being said, I purchased a new M&P 9 PRO 4.25" kit and put my first 50 rounds downrange today.
The person at the shooting range where I bought the MP9 gave me some pointers and a few comments.
I realize the MP9 is a striker fired weapon and that the action is DAO.

I hope I explain this properly. The RO/instructor told me that once you fire the first round, that if you hold the trigger all the way in, and release it slowly until you hear an audible click and also feel the click; that you can then take your next shot/s without having to release the trigger all the way.
My quandary is that on page 19 of the manual it states this: After firing you must allow the trigger to move forward fully before you can fire another shot. Failure to do so will prevent the lockwork from fully cycling and will prevent your being able to fire the next shot.
If someone could clarify this for me or add a comment it would be very much appreciated.
Thank you in advance and I hope I explained or asked that correctly.
Chris in Red Deer, Alberta
 
shikano53 said:
I hope I explain this properly. The RO/instructor told me that once you fire the first round, that if you hold the trigger all the way in, and release it slowly until you hear an audible click and also feel the click;
Click to expand...

That is well explained, as long as you hear/feel the click the trigger is reset.
 
My understanding of it is that anything forward of that audible click is just slack in the trigger. That said I am relatively inexperienced in pistols and am actually waiting for my M&P 9 range kit to arrive! Sure am excited! Might see you at the range sometime assuming you go to RDSC.
 
I also own the same firearm and the RO is fully correct. Once you hear the trigger click or reset you will be able to depress the trigger for your next shot and continue to do so until you feel like stopping. You can also try this dry firing to get the feel for your guns rest. Just rack your slide, pull trigger then while still holding the trigger rack the slide again and you can ease the trigger out till you hear/feel the click, then you are reset. M&P's have an enormous amount of take up in the triggers and have options for after market part kits like Apex to change you pre travel and weight.
 
The reset is short, the take-up (slack) on full release is long. It is fairly easy to master though, with practice. I have a greater issue with the over travel, than the reset. Also, if I shoot my 1911's first, the M&P trigger control takes more conscious effort. I would certainly not, call the M&P a DAO trigger though, it is striker fired - completely different feel, in my opinion anyway. You may want to check out some of Apex Tactical's offerings for the M&P trigger group. There is at least one sponsor that carries these.
 
onetwentyish said:
My understanding of it is that anything forward of that audible click is just slack in the trigger. That said I am relatively inexperienced in pistols and am actually waiting for my M&P 9 range kit to arrive! Sure am excited! Might see you at the range sometime assuming you go to RDSC.
Click to expand...

You are correct.
 
ponymusic said:
...I would certainly not, call the M&P a DAO trigger though, it is striker fired - completely different feel, in my opinion anyway...
Click to expand...

It is technically "DAO", as are all the common striker-fired pistols that we talk about: Pulling the trigger both cocks the striker and releases it, and that's the definition of double action. It feels different from hammer-fired DA pistols, but it's still DA.
 
enefgee said:
Releasing the trigger only as far as necessary to allow the trigger to re-set isn't problem in the M&P - like a lot of things, that's in the manual for liability reasons.
Click to expand...

Exactly.

Shikano53, play around with the reset as described in other posts above. You'll very quickly learn just how much reset is required for the fire control system to fully reset. There is no risk involved, it will just be a "dead trigger" until you let it fully reset.
 
shikano53 said:
Here is my newbie, dumb question. How do you safe the gun if there is a round in the chamber because my MP9 does not have a manual thumb safety, or a mag disconnect or an internal lock.
Chris in RD AB
Click to expand...

This is my safety right here
tumblr_inline_mgc5sxF2qL1rdyvp3.gif




All kidding aside, there is no safety. Load it, and keep your finger away from the trigger until you want to shoot something.
 
Actually regarding DAO - it's kind of, sort of. The are described as DAO but the M&P is only "cocked" further by a very small fraction of an inch. I asked Randy Lee of Apex about this and he said that with the stock sear, the striker cocks back the amount of the cam profile times the diameter of the arc of the sear (like I said a very small fraction of an inch) and with an Apex sear, it's less than that. The take up phase of the M&P trigger is purely to unlock the striker block, and position the sear trip ramp on the trigger bar. The stop you feel before let off is the trigger bar contacting the striker block. This is why on some (well used or tuned) pistols the take up is very smooth and very light - you're really not doing anything but rubbing 2 pieces of metal (the trigger bar's upper extension, that trips the striker block and the inside of the slide) together. If one of those 2 are polished, you won't feel much. The crunchy feeling is actually the texture of the 2 metal parts rubbing together.
 
enefgee said:
Actually regarding DAO - it's kind of, sort of. The are described as DAO but the M&P is only "cocked" further by a very small fraction of an inch. I asked Randy Lee of Apex about this and he said that with the stock sear, the striker cocks back the amount of the cam profile times the diameter of the arc of the sear (like I said a very small fraction of an inch) and with an Apex sear, it's less than that. The take up phase of the M&P trigger is purely to unlock the striker block, and position the sear trip ramp on the trigger bar. The stop you feel before let off is the trigger bar contacting the striker block. This is why on some (well used or tuned) pistols the take up is very smooth and very light - you're really not doing anything but rubbing 2 pieces of metal (the trigger bar's upper extension, that trips the striker block and the inside of the slide) together. If one of those 2 are polished, you won't feel much. The crunchy feeling is actually the texture of the 2 metal parts rubbing together.
Click to expand...
Thank you! That makes total sense and yes, that is a very small arc indeed. I think I will just shoot it 'as is' so to speak and get very familiar with it before I do anything, if anything to it.
Kind regards
Chris in RD AB
 
All kidding aside, there is no safety. Load it, and keep your finger away from the trigger until you want to shoot something.[/QUOTE]

Thanks Steve, That's exactly what the RO/sales person told me as well.
C
 
It's Not DAO, or Double Action of any real type.

With a true DA gun you can keep pulling the trigger, and keep getting clicks...

The M&P is a striker fired gun - in that the action of the slide resets the striker (for the most part). Yes the trigger bar complete the cycle - but its more of a push to release not a cocking cycle.
 
enefgee said:
Actually regarding DAO - it's kind of, sort of. The are described as DAO but the M&P is only "cocked" further by a very small fraction of an inch. I asked Randy Lee of Apex about this and he said that with the stock sear, the striker cocks back the amount of the cam profile times the diameter of the arc of the sear (like I said a very small fraction of an inch) and with an Apex sear, it's less than that. The take up phase of the M&P trigger is purely to unlock the striker block, and position the sear trip ramp on the trigger bar. The stop you feel before let off is the trigger bar contacting the striker block. This is why on some (well used or tuned) pistols the take up is very smooth and very light - you're really not doing anything but rubbing 2 pieces of metal (the trigger bar's upper extension, that trips the striker block and the inside of the slide) together. If one of those 2 are polished, you won't feel much. The crunchy feeling is actually the texture of the 2 metal parts rubbing together.
Click to expand...

KevinB said:
It's Not DAO, or Double Action of any real type.

With a true DA gun you can keep pulling the trigger, and keep getting clicks...

The M&P is a striker fired gun - in that the action of the slide resets the striker (for the most part). Yes the trigger bar complete the cycle - but its more of a push to release not a cocking cycle.
Click to expand...

Thank you, gentlemen, you've stated it much better than I. That's what I get for having a beer while posting.
 
KevinB said:
It's Not DAO, or Double Action of any real type.

With a true DA gun you can keep pulling the trigger, and keep getting clicks...

The M&P is a striker fired gun - in that the action of the slide resets the striker (for the most part). Yes the trigger bar complete the cycle - but its more of a push to release not a cocking cycle.
Click to expand...

Depends on your definition, I think. Agreed that it's not "true" DA, since the fire control doesn't reset with a complete trigger cycle. But the definition I've seen simply states that SA releases the hammer / striker, and DA completes the cocking cycle and releases the hammer / striker. So they are DA by that definition.

Not that it matters, since it doesn't make much sense to apply DA/SA terminology to common striker-fired pistols. Which is why they are called striker-fired.
 
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