Slide release on mag insertion?

[Rastoff]

+1 Your always on top of the game!
I told you I have your notes in my range bag, right? Always give you credit when I pass them along to another newb. (can't afford to pay the royalties)

I try to stay on top, but don't always succeed. Thanks for the credit, but it's really just a compilation of other people's work. I don't remember the last time I had an original thought. As far as "royalties" are concerned, you're not off the hook. I expect a lunch the next time I'm in North Port. Since I find Florida hot and sweaty, and I have no idea where North Port is, it's unlikely I'll be over that way anytime soon.

 

[ginzo]

I'm with you, I am slowly becoming able to speak with some authority. I take some input, go test it, then either agree or disagree.

On something I am not sure of, to be fact, I do not comment. But sit back and wait to absorb some more.

As far as lunch, you certainly would be entitled/welcome. As to the fact you may never be in this hot sweaty hell hole, I was gonna treat you to Filet Mignon! To bad, so sad!!!

Now if you happen to show, they got this great place here called Micky D's, it's steak also. I don't think you have them where you are? LOL

I try to stay on top, but don't always succeed. Thanks for the credit, but it's really just a compilation of other people's work. I don't remember the last time I had an original thought. As far as "royalties" are concerned, you're not off the hook. I expect a lunch the next time I'm in North Port. Since I find Florida hot and sweaty, and I have no idea where North Port is, it's unlikely I'll be over that way anytime soon.

 

[Jboutfishn]

How hard do you have to "slam" the mag in? I tried this exercise with my MP40C and the slide does not close upon inserting the mag.

Just a note, I was doing the"testing" with a full mag.

 

[ginzo]

Not all M&P's will do it. It's neither a design nor a flaw.

I know my .40 FS does it, I will check my .40c in a day or 2 and get back with you.

Just a note, I was doing the"testing" with a full mag.

 

[Donn]

According to the gurus at my LGS, this is the nature of the poly-framed beast. If it's any consolation, Glocks are prone to do the same thing. For the record, I've got three M&P's and none of them have ever released when the mag was inserted. Will it happen down the road? We'll see.

 

[Rastoff]

I take some input, go test it, then either agree or disagree.

I wish more would do this. Alas, too many just believe what they think "sounds good" rather than test it for themselves.

 

[smokey0118]

http://smith-wessonforum.com/smith-...-when-mag-inserted-m-p9-fs.html#post137511871
When you seat a mag in your handgun, the grip angle is 18 degrees and you're probably pressing forward just a bit with the meat of your hand. This means there is some force vectored to push the frame forward. As the frame accelerates forward, the weight of the slide causes it to lag behind a moment until the recoil spring presses enough to move it along. This lag behind in the slide mimics you pulling it back a little and gives an opportunity for the slide catch(not slide release) to fall by it's spring pressure. You can get this to happen in most semiautomatics by hitting slightly forward with the meat of your hand when you seat a mag. It happens a little easier on the m&p for a variety of reasons, one being the rear of the slide stop cutout is angled to reduce local stresses that could cause a crack there.

It's not a big deal and will actually help speed up reloads. Keep in mind, your muzzle should be in a "safe" position and your trigger should be out of the trigger guard until you're ready to fire anyway, so this shouldn't cause anything bad. View it as more of a feature than anything and enjoy.