10mm-Auto

General => Gunsmithing => Topic started by: TXCOONDOG on May 17 2022 03:26:19 PM MDT

Title: Glock 40 not firing on second or third round
Post by: TXCOONDOG on May 17 2022 03:26:19 PM MDT
My G40 just started not firing on the second or third round (every time) until I wait for 10 minutes or so and then the same thing happens.

I took the fire pin apart and clean it along with the spring, firing pin hole, slide, etc.

Any ideas ?
Title: Re: Glock 40 not firing on second or third round
Post by: John A. on May 17 2022 04:23:53 PM MDT
Weak striker spring?
Title: Re: Glock 40 not firing on second or third round
Post by: TXCOONDOG on May 17 2022 05:13:30 PM MDT
Quote from: John A. on May 17 2022 04:23:53 PM MDT
Weak striker spring?

My second thought after cleaning didn't work along with the firing pin being worn. It's just weird that it happens on the second or third round which is why I cleaned.  Every weak spring that I've had either wouldn't hit hard enough period or it would take several strikes to get the primer to ignite.

Thanks for the reply John.
Title: Re: Glock 40 not firing on second or third round
Post by: The_Shadow on May 17 2022 06:35:27 PM MDT
Many people forget to clean the striker channel or firing pin channel as primer cup material or plating can be pushed inside the hole in the breech and over time build up causing lighter hits or no hits.
Title: Re: Glock 40 not firing on second or third round
Post by: Graybeard on May 18 2022 05:00:02 AM MDT
Sounds like heat may be a factor. Something warped, maybe?
Title: Re: Glock 40 not firing on second or third round
Post by: TXCOONDOG on May 19 2022 03:50:10 PM MDT
Had a small piece of brass shaving under the extractor.....no more issues...just seems weird that it was consistently the second or third round. Anyway, problem solved.

Thanks for all your replies.