G19 first range trip and noticed something interesting...

[SpringfieldArmoryXD]

So this morning I got to the range to try out my new Glock 19. Everything went good, except I noticed that when I "pop" a new mag in the slide released on its own. I thought that was odd so I dropped the mag cleared the chamber and tried it several more times. Anytime that I put the mag in with enough force to know that it seated properly, the slide released on its own. Is this proper functioning of a glock? It is my first one

 

[forindooruseonly]

It's not designed to do that. How hard are you "popping" the magazine? With the slide locked back, there's no need to whack it at all. Reload should be smooth, inserting the mag and seating it with a firm push, all one motion.

 

[jackpinesavages]

You are just fine. Have fun and congrats on the 19.

 

[SpringfieldArmoryXD]

It's not designed to do that. How hard are you "popping" the magazine? With the slide locked back, there's no need to whack it hard at all.

I gave it enough force to know it seated, like I do with all my other handguns. I did however notice that it was more prone to happen with a full mag then a partial mag.

 

[jon86]

You are just fine. Have fun and congrats on the 19.

I'm not so sure. I have never noticed a glock doing this.

 

[MCMXI]

except I noticed that when I "pop" a new mag in the slide released on its own.

I shot a GLOCK 21 at work the other day and it did exactly the same thing on every magazine. You could make the argument that it's a feature rather than a bug since the obvious next step after inserting a magazine is to release or rack the slide.

 

[Sapper771]

Your Fine, it happens, nothing wrong with your Glock. I know some shooters that do it intentionally. I have done it a few times on accident.

I have seen this occur, and for some reason, the top round of the magazine was not loaded into the chamber. So I would not rely upon this technique to reliably charge the pistol.

 

[crracer_712]

Don't go over to the S&W M&P forum and try to tell this to a guy on there that passed on the M&P, because they are flawed and do as yours does. He bought a Glock, cause the Glocks aren't 'defective' like that.

Google 'Glock auto forward', or some such names like that. Fact is, the slide catch is minimal and the inertia of the loaded mag driven home sometimes causes the slide lock to release. I don't believe any gun manufacturer will tell you it's supposed to do this, but most will. My M&P will, if pushed in relatively hard. My SR9c won't do it at all, but then again, I can't release the slide lock without releiving tension by pulling the slide back, as some say they can on their SR9c.

 

[ForumSurfer]

It's 100% normal, dude.

Every glock I've ever owned did this...except the sub compacts.
g19 (gen 3 and 4)
g17 (g3 and g4)
g34 (g3 and g4)

I had an m&p pro 5", it did the same thing.

You're just ramming the mag home really hard. Too hard? No, you're not gonna break it.

Here's the really important part. You need to figure out how you want to run the gun. Are you going to depend on that action? Then train to slam it home hard every time. Are you going to rely on the slide release? Use it every time even if it slams home. If you're going to rack the slide on reloads, you need to adjust how hard your ramming the mag home. I've adapted. I do any manipulations with the gun right out in front of me pretty much in front of my face, so I'm aware of the slide closing or not under speed. Like this: http://www.youtube.com/watch?v=4Vnwg_kRRkM&feature=related

At the range you can tell pretty easy, but under the pressure of drills or competition it is easy to not notice unless you train yourself to do so.

 

[ForumSurfer]

Fact is, the slide catch is minimal and the inertia of the loaded mag driven home sometimes causes the slide lock to release.

I think this is why, coupled with the flex of a polymer frame.

Even if I train NOT to slam the mag home hard enough to close the slide, the adrenaline dump in competition causes me to do it anyway.

 

[SpringfieldArmoryXD]

Thanks for the replies guys. I figured it wasn't an issue. It just caught me by surprise when the slide released by itself. Once I get some more time on the gun i'll have to see if it continues to do it, or if it fades out. I guess I could just be a little gentler when it comes to putting in a mag, a habit I got from my AR15 I suppose...

 

[ForumSurfer]

guess I could just be a little gentler when it comes to putting in a mag, a habit I got from my AR15 I suppose

I'm the opposite. I tend to not slam the ar mags home hard enough.

You are seating them hard, though. I didn't ever do it until my first competition. I didn't realize what happened until I was a round short and really confused. I had racked out a live round after it went home on it's own. It was one of my first competitions, too...so I was having trouble just putting one foot in front of the other lol.

 

[SpringfieldArmoryXD]

I'm the opposite. I tend to not slam the ar mags home hard enough.

I ment that I learned to slam AR mags in hard, after having one not properly seated and it fell out the bottom.. Just made it a habit to really send it home

 

[ny32182]

I find that some Glocks do it, and virtually all M&Ps do it, given a robust magazine insertion.

I think the reason it happens more often with a fully loaded mag is that the fully loaded mag is heavier and probably transferring more energy to the frame.

One of my favorite things about the M&P is that this operation is basically 99% reliable. Even polishing/tweaking the slide catch on my G34 I could only get it to happen 80-90% of the time with that particular gun.

 

[David E]

It's 100% normal, dude.

No, it's not.

 

[ku4hx]

When my wife started shooting several years ago I taught her to insert the magazine with considerable force. The idea was for her to make sure the magazine was properly seated during her novice days ... one less thing to worry about. This was something she was overly concerned about. A few times she did seat her G26 magazine with sufficient force to cause the slide to go into battery. Once she gained sufficient proficiency I got her to back off on the force she used to seat the magazine.

The result was the slide no longer spontaneously goes into battery upon seating a magazine and the magazine still seats fully with a audible click.

Like her and her Mean Streak ... It's all a matter if finesse.

 

[Waywatcher]

Sounds like it's under control, but here's one more voice saying "it's normal and not a problem."

It's all in the inertia. The frame, magazine and slide are being jolted upward; while the slide stop is spring loaded to want to travel downward.

 

[ForumSurfer]

No, it's not.

I guarantee you I can take any compact glock or full sized glock and use a magazine without a follower and do this. Same with full size and long slide m&p's. I've never owned a sub compact m&p so I can't say. I owned an xdm and an xd that would do it, as well.

It may not be normal to do this, but it is normal operation for it to happen...the gun is fine.

I had a close friend that swore it was a problem with my gun when he saw it until I finally convinced him to hand me his glock. It did the same thing.

 

[ForumSurfer]

I ment that I learned to slam AR mags in hard, after having one not properly seated and it fell out the bottom.. Just made it a habit to really send it home

I meant that it was a habit I need to break. Do you know how embarrassing it is to do a mag change, release the bolt, *click* goes th trigger and the mag falls out?

Trying to find time for a desperately needed AR class.

 

[Aikibiker]

One of the Magpul videos has a segment about this and why it happens. They also have some tricks to make it happen consistantly or not happen.

I think it was the handgun video, but it may have been carbine 2.

 

[The Lone Haranguer]

My older G19 doesn't do this, but I have had other guns that did. It doesn't hurt anything - the round always chambers, and I was planning to reload it anyway - but I would rather have more control over the process.

 

[grayhambone]

Listen to this. Say you are in a situation where something happens and you need to reload. Wouldn't you want the slide to shut with a round chambered. Isn't it beneficial. One less step right? Honestly.....Just think about this for a second.

 

[abq87120]

My G23 and previous G30 and G26 occasionally release(d) the slide when I load / reload. Not a biggie. The G30 was more prone than the others.

If Glocks aren't your thing, don't buy them. I like mine because they go bang every time I pull the trigger. Additionally, I have experimented with a different trigger setup for under $20 using Glock parts. I went back to stock. How much for a 1911 trigger job?

 

[AJChenMPH]

Hell, it happened to me with a Beretta M9 when I was doing a required mag change as part of the US Navy pistol qual, except it didn't chamber a round -- I pulled the trigger and it went "click". Had to tap/rack to get back into action.

In the 1000 or so rounds I've shot out of my G26, it has happened once (at most, twice). I personally wouldn't rely on this technique to chamber a round based on my experience above...YMMV.

 

[1SOW]

It's common for MANY pistols.
The top round in a full mag with a good spring tension, bumps the slide up and releases the slide lock .
The stiffer the mag springs, the easier it is to release the slide with a good tactical mag change. If you insert the mag in slowly it won't release the slide.

If mine didn't do this, I'd pay extra to get it.