Glock 34 Locking Block Pin keeps walking out

[Oceanbob]

The spring isn't designed to capture the pin.

However the locking block pin is skinny in the middle and press fit
On the ends, it's obvious in the OPs photo that his pin has moved out.

Not because his hole is oversized or cracked. It's easy to see the skinny part
Of the pin makes the hole look bigger. It's not. It's fine.

If the spring was installed correctly the pin would not move that far out.

[Oceanbob]

Consider painting the ends of the pin with nail polish (black is available) or model paint. This will thicken-up the pin by a small amount. It won't need much paint to do this. I think I bought the nail polish at Walgreen's or CVS.

What's likely to occur by calling Glock is:
-unless the gun was bought new within a year, it's unlikely Glock will issue a FEDEX label and pay the shipping.
-Glock usually won't even send a locking block pin to a non-armorer.
-shipping a pistol back to Glock from Calif. will be in the $80 range. An FFL might do it for you for less, however.
-if a new frame is needed, then a new serial number is generated and a dealer will typically charge for receiving and re-DRoSing. Minimally, this may be ~$50. Glock could determine it's not a warranty issue and also charge for a new frame. Does anybody know the price if so? I'm guessing in the $200 range. You would/should then send a report form to CA-DoJ to report your original gun was destroyed by Glock. Glock will give you a letter with the new frame stating such.

Wow. You think the frame is damaged? .....uh........no.

It's fine.

[SkyHawk]

Bob, you showed two aftermarket pins. The factory pin has more of a taper from the skinny to the wide end, which the slide lock spring will allow to slip right past.

Also, the locking block pin is always the first pin to be removed per Glock armorer school. So your theory of the slide lock spring having anything to do with retaining that pin, is contrary. The only thing that holds in the locking block pin, is interference fit with the polymer frame.

Now perhaps an aftermarket pin with a spring notch or a hard 90 degree step from skinny to wide will help someone with this problem, by putting the (super weak and flimsy) slide lock spring to work, but that is not how the factory designed the pin to be retained.

If the holes in my frame were out of spec, I would do whatever it took to enlarge the diameter of the wider part of the pin. Yes, some paint or something will work but is not permanent. Peening is permanent. Knurling one side of the pin is a form of peening, and will enlarge the diameter as well as adding bite.

[ojisan]

For my Kel Tec P32, when installing the belt clip, one of the plastic cross pins is replaced by a steel Chicago screw.
This one has a small hex head on one end and a socket head screw on the other.
I like this pin much better than the plastic one as it is obviously much stronger.
I wonder if one of these in the right size is available to fix frames with loose holes.

http://www.keltecweapons.com/p-32-and-p-3at/p-3at-accessories/belt-clip-fits-p-32-p-3at/

What length and diameter for this Glock pin is needed?
McMaster Carr has some but I think they are too large in diameter.

[L-2]

Wow. You think the frame is damaged? .....uh........no.

It's fine.

I didn't say that the frame was damaged, but I really wouldn't be able to tell without actually seeing the gun and Glock won't be able to determine either without seeing the gun. I just have an idea of how Glock thinks. I was more responding to someone who suggested calling Glock which would be a waste of effort at this time.

On another forum, there was someone who said Glock sent him a new gun for this problem, however. I think his was a new G26 but don't recall on which forum it was being discussed.

I've had these pins walk out and either a new pin or nail polish always fixed the problem.

[Oceanbob]

Obviously a ledge.

In 25 years of Glock, it's been a slide lever spring issue. How did this pin slide past the spring?

Because it's installed wrong.

[L-2]

I believe Oceanbob has correctly diagnosed the issue very well.