Does it happen every time you insert a loaded mag with the slide back? Does your 9c have the mag safety? Will try with mine once my son falls asleep.

 

If I give it a good smack to seat it it does. When using the full sized M&P Mag, it does it every time, unless I gently insert it.

 

It can be a defect but is not usually considered one unless something is broken. Remember, the only thing holding the slide open is the slide stop/release. Any semi auto I know of will release the slide when the mag is inserted if you insert it hard enough. It all depends on how hard you ram it home, the strength of the slide spring, the angle of the catch... The brand of semis I am most familiar with are HKs and while back in the 90s they changed the slide stop to make it harder for the slide to self release upon forceful insertion of a mag, they will all still do it if you try hard enough. The harder you hold the pistol in the firing hand and how hard you slam the mag home will affect how easily the slide will self release, but I've yet to see one, including 1911s, that could not be persuaded to release the slide if the mag is rammed home hard enough.

 

My 45 M&P does it as well as my brothers 40c. I talked to S&W about it and they said its this way for faster reloaded. They also told me if I wanted to I can send it to the and they would work on it. If it bothers you I would give them a call.

 

I can't say if its a defect or not but I can say my USP9mm does it with a firm mag insertion and my dept issue 96D would do it also. Not sure about my glock though. I've learned how much force it takes to make the slide close and now find it useful, maybe not correct, but useful all the same. Definitely interested in what others think.

 

OK, I dug out the manual.

"Warning: do not use excessive upward force when inserting a loaded magazine into the Pistol. Excessive upward force could cause the slide to move forward."

I guess we would have to define 'excessive force'. Now, pretty much every time I gently insert the 17 round full sized M&P mag, it puts it in battery. But, with that, I am going outside of the specs of the M&P 9c.

I am thinking this is a borderline between force of mag insertion and how Smith made the gun.

But, If I am doing any tactical reloads, I am going to smack the magazine.

 

Some pistols do that, the Beretta 92's, M&P's and others will do it, especially if you give the mag a forward and upward thrust. I've heard instructors say that you can actually use it to your advantage to save time hitting the slide release, you just have to make sure that you do it consistently every time.

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All my personal Glocks and issue Glock do this when inserting a mag with authority. I think it is a bonus as stated above, but I do see you creating a "training scar" if all your weapons do not do this. I'm combat tupperware all the way so I'm pretty consistent with it.

 

That is my concern, when I get the $, I want to move into the 1911 platform. One thing I like is the similarity of the M&P and the 1911. I just worry about this causing a shooting stoppage due to cranial confusion.

 

The problem with auto forward is that it can cause failures to feed with HP ammo.

 

I like the M&P. But, this is a problem for me. During my 'testing' I had the slide go into battery, with no round loaded.

This disturbs me. Any suggestion for a gun that has the same grip angle of the 1911 without the mag insertion battery problem?

Oh yeah, the tritium inserts fell out of my gun. Smith says it is a known problem. I got no recall notice...

I think I am looking for a better 9mm platform.

 

The M&P and several other guns are designed to send the slide forward when the magazine is inserted with a slap in and towards the front. Not straight in but in a certain manner. Actually I've seen this method taught several places for various guns. They are usually striker fire guns but I know our sig 229s will do it as well.


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Why not a smaller 9mm 1911. Maybe a commander or officer?


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I'm confused as to how the slide can release forward and not chamber a round...it's my understanding that the impact of the magazine being fully inserted with authority is what releases the slide to go forward. I don't know about this forward push stuff mentioned prior, unless I'm doing it and don't even know it. If your slide is releasing forward, and there is no round being chambered, then the slide is being released before the magazine is fully inserted, and I believe that would be a defect that I would have S&W fix. I have a lot of rounds through my M&P 45, and I ALWAYS reload magazines in that fashion, and I have NEVER had an empty chamber. Same story with my issued Glock 22. As for your worry of it causing an accident at the range, I would simply suggest you keep your finger away from the trigger until ready to fire, as usual. Problem solved. If that is not enough, then load the magazine with the slide forward, and then rack the slide. I'm a big fan of guns that chamber a round upon a firm magazine insertion. It saves time, and I can't come up with any negatives to it.

 

It only went into battery without a round once. I will try it a few more times and see if it happens. I am not worried about an accident at the range. I am worried about self defense brain farts. Of course, the chances of me needing a gun, and especially needing a gun and a tactical reload are very small, I don't want to try to learn two different platforms.

 

WTF, I tried to duplicate the slide going forward and no round loading. I can't. I suspect I hit the slide release right before the magazine seated.

Rob, the EMP looks sweet, but is not in my budget at this time.

 

My Glocks and one of my 1911s does this. To tell you the truth I don't have a problem with it. I did at one time shoot IDPA and IPSC and loved how fast a reload can be when your gun does this.