Slide won't stay open after last shoot

Rhythm & Soul

Rhythm & Soul

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Shooting a glock 17, gen 4

Amo used

American eagle 147
IMI 124
PMC 115

9 out of 10 times, the slide wouldn't stay open after the last shot.

My buddy was shooting a p226 mk, and that only happened to him twice. He was shooting 115 PMC.

But for me, almost all the time the slide wouldn't stay open, tried all the diff amo mentioned above.

But if I racked the slide with the mag still in, slide did stay open.
Any thoughts?
 
Plus two. Where do you hold your thumbs. Have seen many people have their thumbs pointed forward and they make contact with the slide lock. Causing the slide to go forward on last round.Point your thumbs down while shooting and see if this corrects the problem
 
Well lubed? Could be action moves enough to reload, but not enough to reach mag hold open lock. Friction or inadvertent drag on slide could be the culprit, as well as touching slide release in your grip as mentioned above.

Also: How new is the gun? Is this a new problem with an experienced gun, or a new gun with a problem?
 
It's either your thumb is on the slide, or you are using aftermarket mags.

Putting an extended slide release will fix the first problem, and buying OEM mags will fix the second.
I have the same problem with 'riding the slide' with my right thumb, and put an OEM extended slide release on it. Super easy to do.
 
Had the exact same problem with a Sig 226 Scorpion. Turned out my support hand thumb was hitting the slide release.
 
Thanks everyone for your replies

Newish handgun (under 100 rounds) and inexperienced shooter.

Magazines are factory, so must likely is my thumb on the slide.

I'll look for that next time I go to the range.
 
Although I shoot a totally different pistol, had same thing happen with the thumb. Though my Walther was suddenly having problems. Then realized it was all me and my Thumb.
 
Over exaggerate your thumb off the slide next time you shoot. Have it way off and up, away from the slide release, and you'll see. Good times. :)
 
juancarlos said:
Never run dry, problem solved...but in all seriousness... NEVER RUN DRY!:cool:
Click to expand...

According to Glock almost every gun they get back for warranty is run with too much lube. Enough so that they put out a chart so people will stop over lubing their guns:

Glock-Pistol-Lubrication-Guide.jpg
 
Pretty sure LAV dispelled the myth of over lubrication when he ran a Glock straight out of a gallon of motor oil.

That being said, common sense goes a long way.
 
Have you taken the Glock apart? If so you may have installed the slide stop lever incorrectly. The spring attached to the slide stop lever must be underneath the locking block pin.
 
147gn ammo has a softer overall kick to it than the 125 and 115gn ammo. This could certainly be the case if you are using 147gn ammo intended to just meet the IPSC or similar power factor. That may be part of the issue here.

Try some "two rounds per mag" tests where you point at the berm and consciencly don't bother aiming directly but focus on your hold to be sure you are not resting against the slide stop. Shoot the two rounds into the berm or backstop and see if the gun locks back on the second shot. Test each of the mags with the same two rounds. For giggles get some 115gn ammo and try the same test again. If it fails to lock back consistently with the 147gn ammo then you have your answer. If it does lock back consistently then you need to alter your grip as already suggested. But the point is to find the proper cause. Testing the ammo in your gun is one step in this.

If it proves out to be the ammo then what you need is the next weight lower recoil spring.
 
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