Slide drop upon mag insertion.

[NorCalRefuge]

Wasn't that a on-purpose "feature" on some guns?

I don't think it's on purpose for any gun... just an accidental feature due to how the slide-lock/release was designed and how you ram in a loaded mag (causing the lever to pop upwards momentarily and release the slide).

New guns usually are hard to make it happen with... but once broken in and the edges of the slide-lock/release have worn in, it becomes easier and more reliable.

Now... opinion - I hate it because it's unreliable. I've seen experienced guys that count on this happening freeze like a deer in headlights the one time it doesn't drop the slide automagically.

Not good... in my opinion, better to always train to reach over C clamp style and drop the slide manually. Even if it happens to drop automatically, the motion to do it manually should still be automatic, for those cases where it doesn't work like expected. But, that's just my two cents.

[NorCalRefuge]

I own several HK pistols in 9mm and 45 ACP---none of them close the slide upon inserting the magazine. They are both full-size and compact pistols with standard capacity and 10 rd magazines... Just sayin'...

You have to hold the gun at approximately a 45* angle to the right (if you're right handed and holding gun in your right hand), and RAM the magazine home. Not kidding, the harder/faster the better. A lot of guys seat the mag, then smack it with their palm all the way in to get the force/speed required to do this reliably(ish).

It's the force of the loaded mag being rammed in, plus the angle of the gun, takes just enough pressure off the slide release to allow the slide to drop on it's own. You're basically bouncing the slide release out of the way, then the normal mechanisms take over just as if the gun was just fired... slide goes forward, loads round, etc.

Very unreliable in my opinion, but that's how it's done. I've not shot a semi-auto pistol that can't do it yet... some are just harder than others.

[Robert1234]

Wasn't that a on-purpose "feature" on some guns?

It should be.

[Robert1234]

My HK VP9's all have done it from day one. I would be upset if they did not. As long as the slide always locks to the rear on an empty mag.. its all good!

Had more than a few M&Ps that did it reliably and consistently, no need to slam the mag, just seating it with the necessary vigor during a reload would drop the slide.

They redesigned this in the M&P 2.0, and now it's got a detent on the slide stop that you need to remove to even be able to use the slide stop to drop the slide.

Everything else about the 2.0 is an improvement, that "correction" was misguided.

[NorCalRefuge]

They redesigned this in the M&P 2.0, and now it's got a detent on the slide stop that you need to remove to even be able to use the slide stop to drop the slide.

Everything else about the 2.0 is an improvement, that "correction" was misguided.

Does this include a Shield 2.0? Mine works as a release, but it's pretty stiff. Perhaps that's the detent?

[walmart_ar15]

Does it for me consistently enough on USP, that I actually train with that in mind. But as mentioned, it will only work with the gun at "optimal" position.

Somehow the mag insert force will just bump the slide backward to release the slide stop. I can even do it with a single dummy round.

I have also noticed it is more consistent on plastic guns vs steel frames (seems more related to wear and tear of the contact surface), and with slide stops that has a return spring and standard recoil spring weight.

[NorCalRefuge]

My glock 35 will do it if I really nail the magazine with the palm of my hand when putting it in. I actually think it's a pretty Kick-*** feature even if unintentional. The only time that I would need my firearm to perform in that manner would be in a situation where I need my firearm to save my life. Will never do it upon range shooting with just normal Mag insertion, so I actually think it's a pretty cool option in a **** hits the fan situation

And there lies the problem. In a real SHTF situation, with all the adrenaline and other chemicals surging through your body... this is perhaps the least reliable option to rack the slide. What do you do if it doesn't work on first try - probably involuntarily freeze up for a moment or two before you process what just happened.

I'd say reverse this - for range days, or competition - have fun. For real situations, do what works every single time... manually rack that slide.

[Robert1234]

Does this include a Shield 2.0? Mine works as a release, but it's pretty stiff. Perhaps that's the detent?

I don't own a Shield, so I can't speak to that.

The one's I own are a M&P9 Pro Performance Center 5" and a regular FDE 5" 9mm gun.

[Robert1234]

Does it for me consistently enough on USP, that I actually train with that in mind. But as mentioned, it will only work with the gun at "optimal" position.

Somehow the mag insert force will just bump the slide backward to release the slide stop. I can even do it with a single dummy round.

I have also noticed it is more consistent on plastic guns vs steel frames (seems more related to wear and tear of the contact surface), and with slide stops that has a return spring and standard recoil spring weight.

I've had 1911s that would do it consistently. Not all of them, just certain ones. Mine was a Kimber.

[sbo80]

The gun gets locked up and would not get free after multiple times taking the mag in and out of the gun. Eventually the I get the gun out of derp mode and clear it.

most of these comments don't actually address the OP's problem. Read again - the issue is less the "auto-forward" but that with his gun the auto-forward is causing a jam of some sort. OP - you need to explain that jam in more detail. Is it not fully in battery? Can it fire from this condition? Can you not rack the slide anymore?

[Robert1234]

most of these comments don't actually address the OP's problem. Read again - the issue is less the "auto-forward" but that with his gun the auto-forward is causing a jam of some sort. OP - you need to explain that jam in more detail. Is it not fully in battery? Can it fire from this condition? Can you not rack the slide anymore?

He seems to have corrected his jam issue (cleared it and it hasn't returned, my earlier assertion of an ammo issue stands), and now the only question is on the auto-forward feature.

[NorCalRefuge]

Norcalrefugee

Completely understand what you're saying, but in a situation where I had to do a reload of My magazine I wouldn't be ***** footing it up into the magwell. I'd be slamming that ****er in there and making sure it didn't drop in the middle of a firefight. That being said, the slide dropping on its own is secondary. I would always first think to manually engage that slide, but if it happened to drop when you insert the new mag, you would see, feel, and hear it happen. To each his own as far as opinion goes, but I've run it through my head enough times over the years having shot this firearm to feel for me it's an advantage. Doesn't mean it has to be a better option for someone else

Fair enough, but let me ask - why not practice it at the range?

We're all different... but I think you'll find it often doesn't work like you think it will in your head. Watch enough competition shooters do this and you'll see them screw it up too... and everyone pauses for a moment to comprehend what to do next. In a real situation, that terrifies me.

You don't really want to be thinking in a situation like that...

My recommendation would be, next range day, reload like this every time. See what % failure you get out of it. Don't try something new you've only gone over in your head in a real situation... that's how you end up losing

[IVC]

Nothing wrong with the gun, it happens often with different guns.

It's not a good "feature" to rely upon because it's not consistent. If it happens *some* of the times, you still have to go for the slide release (fast method) or sling shot (slower) as part of your routine even if the round chambered. You don't have time to analyze what happened while performing an emergency reload, so you automatically follow up magazine insertion with the appropriate slide release action even if the slide flew forward.

It is possible, although I haven't witnessed it, to have an FTF during auto-slide forward if the slide releases before the magazine is fully seated. This will *not* happen if you practice to *cause* the slide release by slamming the magazine in, where you know the magazine is fully seated before the slide flies forward.

However, as a USPSA shooter, my advice is always "use tactical reloads, emergency reloads are for IDPA." Flame away...

[Robert1234]

Nothing wrong with the gun, it happens often with different guns.

It's not a good "feature" to rely upon because it's not consistent. If it happens *some* of the times, you still have to go for the slide release (fast method) or sling shot (slower) as part of your routine even if the round chambered. You don't have time to analyze what happened while performing an emergency reload, so you automatically follow up magazine insertion with the appropriate slide release action even if the slide flew forward.

It is possible, although I haven't witnessed it, to have an FTF during auto-slide forward if the slide releases before the magazine is fully seated. This will *not* happen if you practice to *cause* the slide release by slamming the magazine in, where you know the magazine is fully seated before the slide flies forward.

However, as a USPSA shooter, my advice is always "use tactical reloads, emergency reloads are for IDPA." Flame away...

With the original M&Ps, it was consistent, at least in the ones I had

When there's an ambi slide stop, my thumb is on it, for non-ambi slide stop guns, my trigger finger is on it if possible (in case you haven't figured it out, I shoot pistols left handed) during a reload, so one way or the other, the slide is going forward. It was just nice when it was automatic like the original M&Ps.

[saudadeii]

Does this include a Shield 2.0? Mine works as a release, but it's pretty stiff. Perhaps that's the detent?

Shield 2.0s do not have the detent. I have a 1.0 and no amount of slamming, short of injuring myself, will get the slide to release on its own. Since the Shield is harder to rack in the first place, I conclude there's too much pressure on the slide lock to get it to "slip". It's hard to release even using my thumb. I rack the slide to release.

My 1.0 Compact and Fullsize are another matter. They do auto forward occasionally. Sometimes more readily than others but not consistently.

I believe it's somewhat ammo dependent too. By that I refer to the weight. The OP's Ruger holds 10 rounds of .45. If 230g, that quite a bit of weight he's slamming in there.

I've noticed it being easier to auto release with fully loaded mag over a nearly empty one.