Primer issue

BooneCounty · Jun 18, 2020

My M&P Shield.45 is tearing the primers...Contacted S&W Customer Service and the lady said to send it to them without a magazine and did not want any of the spent shells with the damaged primers. I received my gun today with an explanation that after three mags fired, there were no misfires. Correct, the gun is firing OK, it just tears the primer. I wondered how they were going to see the problem without seeing the primer issue. Anyone having a similar problem? I'm chalking this one up to a poor customer service rep and a piss poor service tech who obviously did not look at the tear in the primers. I never said it didn't shoot OK, I told the lady it was tearing the primers....Anyone else have this primer issue?

rockster` · Jun 18, 2020

That's striker drag (some people call it primer drag), and you'll find that on a majority of striker-fired pistols. It happens on my M&P 9c, my buddy's Glock 19, my other buddy's M&P 40c, Sig P365 etc. etc.

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swsig · Jun 18, 2020

Those are completely normal for a Shield 45. I have nearly 8,000 rounds through my Shield 45, and all of my shells look like yours, and all have fired perfectly. S&W clearly designed Shield 45s to fire that way. So go out shoot the heck out of your Shield and enjoy it. And don't worry about the striker drag. I don't!

S&WIowegan · Jun 18, 2020

Glocks do it too

I have two Glocks, models 34 and 35, and they both routinely smear/melt the fired primers. I've never had a problem caused by this.

Saudade · Jun 18, 2020

Yeah, all of us have it. It's normal.

sandog · Jun 18, 2020

Firing pin drag on the primers in the .45 Shield is normal, they all do it.
Shoot it and enjoy it.

Mine goes with me everywhere, and since this time of year rattlers are much more likely to be a problem around here than scumbags, the first two rounds up are CCI shotshells.

Mike SC Hunter · Jun 18, 2020

My S&W 4006 purchased NIB in 1989 was where I first noticed this. We called it the "tadpole" since the primer had the round indent with the "tail". It's caused the slide beginning rearward movement and unlocking before the FP has retracted into it's hole in the slide.......Really no big deal.

BooneCounty · Jun 20, 2020

Thank You!

Thanks again for all the input...you've put my mind at ease. I wish S & W would have told me about it ...

BE Mike · Jun 20, 2020

The first time I encountered primer drag was many years ago with my Kahr CM9. Years later when the Sig P365 came out, some internet reviewers were going insane about it. I suppose that the reviewers weren't the experts that they thought they were. As someone else suggested; just shoot it and enjoy your pistol.

stansdds · Jun 20, 2020

Firing pin (striker) drag mark. This happens when the firing pin or striker does not fully retract into its tunnel before the barrel unlocks and cams down. My first experience with this was with a Tanfoglio TZ-75 Series 88. I changed recoil springs and firing pin springs, it still marks the primers. I learned to live with it. It seems to be a more common thing with some pistol designs than others.

Funflyer · Jun 20, 2020

BooneCounty said:
Thanks again for all the input...you've put my mind at ease. I wish S & W would have told me about it ...

This is why Al Gore invented the internet

. A quick Yahoo search would have saved you a lot of grief. Search for "Shield 45 primer" and you'll see the first two results would have alleviated your unnecessary concern and kept you from inserting your foot in your mouth.

Primer issue

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