M&P question

[Evojoeix]

Put another 150 rounds through my new M&P 40 vtac today at freestate. Today I noticed something....

Sometimes when I put my magazine in and the slide is back, the slide will automatically slide forward so the gun can be fired right away. It only did this a couple times though. It doesn't always do it and in the first 300 rounds I shot, it never did it

I'm putting the mags in with the same force each time, so it's not like I'm doing anything different. It just randomly does it. Why is this? Is it normal?

 

[Hambone]

My M&P 9mm that I bought in December does the same thing every time I insert a loaded magazine. It has all along, I do not know if its normal.

 

[JB62]

Have an M&P pro 9 mm cannot say it has ever done that. Interested in definitive word though.

 

[Evojoeix]

I did a quick google search and some people say theirs do it and some don't....

I just don't understand why mine only did it a couple times and it's not consistent

 

[BradMacc82]

It's common.

My M&P .45 and .357 SIG would do the same if I slammed a mag home, usually a full mag, but could do it with half a mag as well.

Glocks do it too. HK USP too - but if you get it wrong you break the base of the magazine ($60+ magazine).

I actually enjoy that quirk, for me it's quicker than sling-shotting or trying to trip a slide lock when on timed events.

 

[Evojoeix]

I really like it too, I wish it did it every time I put in a mag

 

[BradMacc82]

I really like it too, I wish it did it every time I put in a mag

It can.

Just takes practice.

 

[montoya32]

That is a feature of the gun. You have to slam the mag in for this to occur.

 

[Keystone70]

I have a fs and comp MP 9. They both do it almost all the time . Full mag and insert with force. Really helps during reloads in IDPA matches.

 

[Evojoeix]

Maybe it's not consistent because I only put 10 rounds in a mag when I'm shooting targets for practice

Next time I go out, I'll fully load the mags and see if it does it every time for me

 

[Keystone70]

Maybe it's not consistent because I only put 10 rounds in a mag when I'm shooting targets for practice

Next time I go out, I'll fully load the mags and see if it does it every time for me

That does make a difference; Although, in IDPA limited to 10 rounds in a mag and mine still works great. Practice with the forcefull insert. Don't just flip it in. Push it hard and don't leave go until after you shove it all the way in one strong push.

 

[Evojoeix]

I will try that next time I'm shooting. Thank you

 

[5cary]

It's very common. I have 3 M&Ps, including a compact and full size .40. They all do it.

I actually *hate* it. It creates a training "scar" for me. I've spent years manipulating the slide on reloads. Now I get the "auto forward" 98% of the time, and that 2% messes with me because now I expect it.

 

[OrbitalEllipses]

Happens to my M&P 40 if you slam the mag in. As someone mentioned, this is a 'feature' and I've heard of other manufacturers changing the geometry of their slide release to either accommodate or get rid of this 'feature'.

 

[aaron.foulk]

Yep, mind does it, too. It is common. When it is inconsistent, it's a blessing and a curse if you're shooting IDPA. Mine does it most of the time, but when it doesn't work out, I wind up looking stupid and losing time. I'd rather it not do it at all and be consistently fast with a 100% reliable method.

 

[itsslow98]

That does make a difference; Although, in IDPA limited to 10 rounds in a mag and mine still works great. Practice with the forcefull insert. Don't just flip it in. Push it hard and don't leave go until after you shove it all the way in one strong push.

That's what she said


Sorry, I couldn't exit the page without saying it.

 

[BerettaMan]

I believe it's pretty common on polymer frame guns. I saw a vid on it a while back. Can't remember where. If the slide release isn't fully seated, slamming a mag in allows the frame to flex just enough to release the slide. Happens to me once in a while with my xdm. Nothing to worry about. You can do it with a Beretta 92 as well.

 

[R81]

In my opinion, it a design flaw. (even though some people like it)

 

[Pretoria78]

It's called autoforwarding, and as others have indicated, it is common with the M&P series of pistols.

 

[Wayne1one]

In my opinion, it a design flaw. (even though some people like it)

Opinion opinions........... Can't have a design flaw among that many different manufacturers, especially since they all have different designs. Actually Glocks & H&Ks auto forward along with many popular polymer pistols pistols!

Glock Demo.
https://www.youtube.com/watch?v=ZHupX4B54h8