Warning

 

Close
Confirm Action

Are you sure you wish to do this?

Cancel Confirm
AR15.COM
5/28/2011 6:10:49 PM EDT
Just got a M&P40 and took her out for the first time today. She ran flawlessly but I noticed something. When the slide is locked back and I slap in a new mag, the slide releases without me using the slide stop. I have a sig and a barretta, and neither of them do this. Is this suppose to happen?
5/28/2011 6:12:58 PM EDT
[#1]
It's not designed to happen, but it does. I can do it on my M&P and one of my 1911's.
5/28/2011 6:55:58 PM EDT
[#2]
Normal if you slap the mag in hard enough. GLOCKs do it pretty easily.
5/28/2011 7:06:58 PM EDT
[#3]



Quoted:


It's not designed to happen, but it does. I can do it on my M&P and one of my 1911's.


i understood it as a feature, not a flaw



 
5/28/2011 7:11:05 PM EDT
[#4]



Quoted:





Quoted:

It's not designed to happen, but it does. I can do it on my M&P and one of my 1911's.


i understood it as a feature, not a flaw

 






 



Yeah, it can take some seconds off if you trust that it got a round in.
5/28/2011 9:59:37 PM EDT
[#5]
I have a sigma that does it also
5/30/2011 11:03:25 PM EDT
[#6]
I've read that it all boils down to physics and not design or manufacture.
5/31/2011 2:36:38 PM EDT
[#7]
Alot of striker fire guns do this, think its called a Mag Slam reload.
5/31/2011 4:17:29 PM EDT
[#8]
Quoted:

Quoted:
It's not designed to happen, but it does. I can do it on my M&P and one of my 1911's.

i understood it as a feature, not a flaw
 


Just don't depend on it to happen all the time. Train to sling shot the slide. If it rocks forward on a mag change consider it a bonus. Last summer at out Dept qual's a couple folks had the Smith's go down of them because they "slammed" the mag home trying to make the slide rock forwatd and succeeded in jamming the mag to far in the mag well, thus causing the weapon to go tits up, till it could be cleared. I have also seen the same thing happen with Glock's and Berreta's.
6/1/2011 9:23:16 AM EDT
[#9]
Quoted:

Just don't depend on it to happen all the time. Train to sling shot the slide.


This absolutly.

Train to the point were you are actualy racking out a live round, when the slide does drop for you.

6/1/2011 11:09:26 AM EDT
[#10]
Quoted:
Quoted:

Just don't depend on it to happen all the time. Train to sling shot the slide.


This absolutly.

Train to the point were you are actualy racking out a live round, when the slide does drop for you.




That is my problem. With my Sig, I like to slam the mag in and rack the slide with my hand over the rear sight and push it forward. That way, I know it is chambered. With the Smith, it racks by itself. Is there a way to prevent this from happening?

6/1/2011 11:16:24 AM EDT
[#11]



Quoted:



Quoted:


Quoted:



Just don't depend on it to happen all the time. Train to sling shot the slide.




This absolutly.



Train to the point were you are actualy racking out a live round, when the slide does drop for you.









That is my problem. With my Sig, I like to slam the mag in and rack the slide with my hand over the rear sight and push it forward. That way, I know it is chambered. With the Smith, it racks by itself. Is there a way to prevent this from happening?





are you saying you walk it forward?



 
6/1/2011 3:59:47 PM EDT
[#12]




Quoted:





That is my problem. With my Sig, I like to slam the mag in and rack the slide with my hand over the rear sight and push it forward. That way, I know it is chambered. With the Smith, it racks by itself. Is there a way to prevent this from happening?







Don't slap the mag in so hard and it should stop.
6/1/2011 4:19:30 PM EDT
[#13]
Quoted:

That is my problem. With my Sig, I like to slam the mag in and rack the slide with my hand over the rear sight and push it forward. That way, I know it is chambered. With the Smith, it racks by itself. Is there a way to prevent this from happening?




I see no problem.

If the slide drops, it drops.

Rack it anyway.

As the poster above me said, I'm unclear what you are doing with your hand on a reload. There should be no pushing forward.

It should be a hard sling shot to the rear and back on target shooting.


Quick Youtube search, I'm sure there is a better one out there but, between .38-41 watch the bald guys reload.

http://www.youtube.com/watch?v=ZTr8xvkUWp4&feature=related
6/1/2011 5:25:40 PM EDT
[#14]
Quoted:
Quoted:

That is my problem. With my Sig, I like to slam the mag in and rack the slide with my hand over the rear sight and push it forward. That way, I know it is chambered. With the Smith, it racks by itself. Is there a way to prevent this from happening?




I see no problem.

If the slide drops, it drops.

Rack it anyway.

As the poster above me said, I'm unclear what you are doing with your hand on a reload. There should be no pushing forward.

It should be a hard sling shot to the rear and back on target shooting.


Quick Youtube search, I'm sure there is a better one out there but, between .38-41 watch the bald guys reload.

http://www.youtube.com/watch?v=ZTr8xvkUWp4&feature=related

 
Yea, old habits die hard. Thats what happens when you learn on an old 6904 that would fail to get a round into battery more often than not. Sue me. But as for slapping the mag home, It's not like I'm hammering it in there. Even when I do it delicately, the slide drops by itself. I'm not tactical operator by any stretch of the imagination, so if that is the way its suppose to be, I'll live with it. It's just not what I'm used to. As for racking it again, I'd hate to waste a perfectly good round, especially when just target shooting.....
6/11/2011 2:18:21 PM EDT
[#15]
All of my autos will do this.  Mostly the glocks and my Beretta M9.  
6/11/2011 3:09:11 PM EDT
[#16]
I say BS.  How does it go in further than it is suppose to?  The base of the grip stops the mag, unless you're Charles Atlas.
6/12/2011 5:03:12 AM EDT
[#17]
Quoted:
I say BS.  ................................


And you would be incorrect; since it is a common occurrence with many of those pistols as it is with mine.
6/12/2011 6:24:55 AM EDT
[#18]
Watch your strong hand thumb placement.  Sometimes if your thumb is barely resting on the slide release, when you load the mag, this can exacerbate the issue.  I don't rely on the fact that a slam release chambers a round.
6/12/2011 12:24:49 PM EDT
[#19]
Quoted:
Watch your strong hand thumb placement.  Sometimes if your thumb is barely resting on the slide release, when you load the mag, this can exacerbate the issue.  I don't rely on the fact that a slam release chambers a round.


...and yet, in my first hundred reloads or so, a 'slam release' has never failed to chamber a round.  I stopped checking every time after that, but my M&P has never failed to go BANG after a slam load.  I have had my slide fail to lock back when using cheap range ammo, so I also get plenty of practice in reloading and working the slide.

Aas to over-inserting a mag, is this a case of using a full size mag in an M&P Compact?  That, I can imagine.  But in a full size M&P, I have trouble picturing it also, as long as the factory mag plates are still on the mags.  Not saying it doesn't happen, I just have trouble figuring how how it happens.