I haven't been able to execute this on any other pistol. Give it a whirl it's harder than it looks LoL.

https://youtu.be/d8uUL0jpvbM

Somehow I get the impression that he used an extended mag so he could slam it into the well really hard. I'm not sure that's necesarilly healthy for the pistol, but to each their own maintenance schedule.

If you'd like to see it done on another pistol, give the Steyr M a try. It's a bit of a luck of the draw thing, but several people have reported having that happen on another website.

OP, you know that this is nothing new and happens on a lot of different manufacturer's pistols, right?

I can get it to do it with my Beretta, Glock, SIG, HKs. I think it's even a feature of my CZ.

Yeah. It's called auto-forward, and you can do with it all kinds of pistols. Some love to do it all on their own, and some can be coaxed into doing it by applying a kind of forward and upward momentum with your offhand palm as you seat the mag. Once you have a feel for it, it's very easy to do.

Welcome to Sigforum. There's a lot to learn here.

Did it appear as though the pistol was abused in any way? If it can't handle that then you've got a Chinese knock off. Also it can be done without a magazine at all it just really hurts the palm. I'd like to see it done with any other make Glock especially.... I don't think it's a feature of the Sig, I've emailed asking but no reply.

Okay....makes sense sometimes I can do it like butter with very little force, other times 0/50 no matter how much force.... I was always wondering about some kind of insertion techniques.

OP you must be very new to guns. Anyone who has been around pistols and owns a lot of them know some guns will do this and others won’t. I personally hate it as it throws my mag changes off. In my mind it’s a failure, not a feature.

My 365 thankfully doesn’t do this, but my 365xl unfortunately does it. I have several glocks that do it. The only gun I’ve owned that won’t do it (brands that I’ve owned and shot numerous examples of the brand) is the M&P 2.0. S&W specifically designed their slide release so this wouldn’t happen.

In almost 30 years of owning and shooting S&W, SIG, Glock and CZ pistols, I have had some of them do this, some not. (I don't remember which, but my current CZs and P320 do not.) Although, of the ones that did, they always chambered the round, I prefer they not. It's a control thing. The slide does not seem to run forward as fast as when I use the slide stop or pull the slide back and release it to fly. So "auto-forwarding" is not something I wish to depend on.

Not my style, but each to his own.

It’s dependent upon the angle and degree of force used to seat the magazine. There usually must be some force component at an angle that drives the frame or grip module forward while inertia keeps the slide stationary.

When it first started happening to me years ago as I began practicing fast reloads it was disconcerting because I didn’t expect it, and I usually dumped a live round on the ground because I automatically cycled the slide even though it had already been released. In recent years I’ve become better at reacting appropriately.

I know a number of Glock shooters who expect it to happen and when it doesn’t they hesitate and delay releasing the slide manually.

It's a feature on several different makes of pistols in my accumulation with certain magazines.

Like SIGfreud said, I have found it dependent on the angle of insertion far more then anything else and most of my pistol will do it when I load at around a 20ish degree angle, which I usually do. I don’t do it for the auto forward it’s just how I naturally load.

Also, as had been said above, DO NOT look at it as a “feature” as it’s not a 100% going to happen. Always do what you do to release the slide anyway (slide stop / release, slingshot whatever).

quote:

Originally posted by Noisypop:
I'd like to see it done with any other make Glock especially....

It has happened to me quite a few times in my gen 3 Glock 17. Usually occurs when I'm in a hurry to reload, and I slap the magazine in with more than normal force. Like in a match, or during training while on the clock.

It is by no meas a "feature". People who have shot a lot of pistols know this.

quote:

Originally posted by fritz:

quote:

Originally posted by Noisypop:
I'd like to see it done with any other make Glock especially....

It has happened to me quite a few times in my gen 3 Glock 17. Usually occurs when I'm in a hurry to reload, and I slap the magazine in with more than normal force. Like in a match, or during training while on the clock.

It is by no meas a "feature". People who have shot a lot of pistols know this.

Yep, to all of the above.

Well worn Glocks tend to exhibit it the most, in my experience.

And it's definitely not desirable. If the autoforward happened 100% of the time, it's something that could be incorporated into your reload procedure practice and might be seen as a positive thing. But as it is, it's not desirable, since it's not consistent and when it does occur it throws off your "normal" reload procedure.

No, it's not a feature. It's incidental and in my opinion, detrimental to safe handling. I wouldn't want to routinely handle a loaded pistol which behaves this way.

With a little monkeying around with a dremel tool, maybe a true master could rig it to fire at the same time.

As far as other makes. I can make it happen on pretty much anything although double stacks seem more likely to do this.

I have done it with ....
SIGs
HKS
Glocks
Walthers
Etc.

Again, at least in my experience, it is all about the angle of the gun during magazine insertion. I don’t, nor should you, rely on it but it’s fairly easy to make happen especially with guns with a few rounds through them.

I guess the fellow in the video thought he had discovered something new, and needed to get it out on YouTube soon as possible? It's just that when the magazine is inserted forcefully, the pistol is jolted upwards, while the slide stop wants to maintain it's position in space. Newton's 1st. law stuff. Some on the internet apparently think when it happens it's either a cool design feature or a design or individual pistol defect. Guy must be new at this....

My Springfield XDM will do this.

Definitely not a new thing. But of all of the pistols that I've owned, only my P30 does this. It does it regularly without having to try particularly hard at all, kinda like the SIG in the video. I've heard many say that they have Glocks, HKs and SIGs that can drop the slide on a hard mag load but beyond my P30 I've not been able to get any of the rest of mine to replicate this phenomenon. But then again I'm also not going to slam the gun and/or mag as if I'm trying my damndest to break either of them.