Are these factory magazines?

Check hand position to make sure you're not pushing upward on the slide stop when you shoot.

Have you taken it completely apart? If you did, was the slide stop spring correctly re-installed? Was the slide lock properly installed?

Check those and let us know.

 

Good advise above, it's very easy to insert the locking block pins in the wrong order... Top pin (the thinner one) first, then press the slide stop in using the top pin to press down on the spring. Then, line up the holes and install the larger pin.

If that is not the issue, try removing one round below max in your magazines until the mags "loosen up a bit.

Lastly, there is a "curved cam" on the underside of the slide, near the firing pin safety (the "button looking thing"), be sure to use some good gun oil on that cam (metal curve) to help cycling.

Hang in there, keep communicating with us and we'll get it sorted... Don't give up on your G21 just yet!

 

Good advise above, it's very easy to insert the locking block pins in the wrong order... Top pin (the thinner one) first, then press the slide stop in using the top pin to press down on the spring. Then, line up the holes and install the larger pin....!

EdF702 is probably on the right track, here's a photo that illustrates the correct position of the parts when installed:

If the parts do look like this photo, then it's possible that the spring on the Slide Stop Lever is broken. To check, just see if the Slide Stop Lever snaps back down when you push it up (with the slide off the gun). If not, the spring may be broken. If it is broken, it's an inexpensive part and it's relatively easy to replace.

Chris

 

its my first glock and I fell like its a pos.

I do hope that we can change your mind on this once the problem has been resolved.

Glocks are forgiving, it will not have had, it's feelings hurt ....

: )

 

How experienced are you with handguns? I ask that because due to Glock's lightweight frame, recoil induced malfunctions are common with first Glock owners and especially true with folks new to handguns.

 

I've owned a lot of hand guns just my first glock. What would u suggest I could be doing wrong

 

Are you a revolver shooter or have you owned many semi autos?

Where I'm going with this is that shooters new to Glocks "sometimes" have recoil induced malfunctions due to the difference shooting a Glock with it's extremely light frame as opposed to a 1911 or series 3 S&W that have heavy steel frames.

To run a Glock well, the shooter must really lock your strong hand wrist and create a stable platform for the slide to cycle on. If, due to the light frame, the new Glock shooter lets the muzzle flip excessively, feeding and ejection troubles result.

Do you have a bud that shoots Glocks? If so, let him have a go with your G21 and see if the problem persists.

We get lots of new Glock shooters that pop up here with a similar concern. There are many potential causes and diagnosing via words with no visuals can be difficult. I'm just trying to eliminate variables.... We'll get it sorted, it just takes some patience and some back and forth.

 

Problem is most likely either Limp Wristing, of the slide lock spring as stated in above posts.

 

The stove piping is likely a grip issue, and the double feeds are most likely a magazine issue. Do you happen to know which magazines were in the gun when it double fed?

I would ditch the Korean magazines until you determine what is happening with which equipment specifically. Adding Korean magazines into the mix when you have cycling issues just makes troubleshooting more difficult.

 

He seems to have corrected the slide stop spring problem. I am sure that he's properly cleaned and lubed his G21. Make sure you're not letting your wrists and/or elbows act like shock absorbers. Use quality ammo. Make sure you have good springs in your Glock factory mags.

 

I had a +2 floor plate come off once, it was an old gen1 mag,and that was many, many, years ago.


I still have the dream of presenting my weapon and pulling the trigger and the floor plate comes off and dumps all 17 rounds on my feet ...




More like a nightmare really ....


Wonder what Freud would have though ?

 

Well, what's the latest? Is it fixed?

 

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