Having a problem with my handgun

[timcar86]

I have a S&W M&P pro 9mm and I've started having some issues with it. It's got a pretty high round count (6000-8000) and I've recently changed the recoil spring.

Here's the issue; when rapid firing, it will occasionally not fire. By that I mean it fires a shot(s), ejects the spent brass, chambers the next round but the firing pin won't strike when I pull the trigger. I do a tap-rack and I'm back in business but it happens almost all the time now. Tried different magazines, very careful of my grip, one handed firing but still the same result.

Any thoughts would be appreciated.

 

[A.J. Holst]

Thorough cleaning / inspection of firing pin channel? 

[ShaunM]

I would start with a take down and really good deep cleaning. I would inspect every part as I take it apart, especially the firing pin.

[chances R]

Try a new strker assembly.  Cheap try especially with your round count.

[timcar86]

In case anyone was curious. I did some research and discovered that the striker assembly doesn't like too much lube (or any at all). So I took it apart, cleaned it and dried it out really well. Back at the range it didn't have any issues at all. 3 magazines rapid fire and no issues.

[musicman]

Retracted.

 

One day I'll learn to read. :-)

Edited June 23, 2016 by musicman

[chances R]

13 hours ago, timcar86 said:

In case anyone was curious. I did some research and discovered that the striker assembly doesn't like too much lube (or any at all). So I took it apart, cleaned it and dried it out really well. Back at the range it didn't have any issues at all. 3 magazines rapid fire and no issues.

That is why I am a big fan of Hornady Spray Clean/Lube.  IMO works great on trigger assembly, sear, and striker assemblies.  Old posts comparing lubes and lubricity demonstrated outstanding results for this product.  Been using it ever since and have not been disappointed.  As far as the M&P platform, Hornady spray and a drop of Mobil 1 with a needle applicator on the frame 'ears' where the slide rides and you  are good to go.