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Discussion Starter #1
Hello all!
I hope I can find help and advise here. Not only my gun is brand new, but also I am a brand new gun owner. This p99 is my first. So, if my questions sound naive, please cope with me.

I have this gun for only a week. It jammed yesterday, and the only thing I did differently was a ProMag aftermarket mag (brand new, too). I fired 200-250 rounds before the jam, all 115 gr FMJ Winchester, using factory Walther mags. No problems. And then I try a new ProMag ones, and it jams once (I fired 50 with these mags). I was able to clear it just by pulling the slide all the way back, a round went into the chamber after I released the slide and the gun continued to fire normally. As you can imagine, I was more than upset. A range owner suggested it was a mag, he says all aftermarket mags are crap compared to factory ones. Can it be a case here? Should I stick with the original ones only?

Anothe question I have about this gun: one of the factory mags sometimes wouldn't "click home" when loaded, I have to literally push it in pretty hard a few times. It happens only when it loaded.

Any suggestions and advise will be greatly appreciated.
Thank you in advance,

Take care
DoctorV
 

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Jams with the Promags are not uncommon, stick with the factory Mecgar mags.
The mags will be harder to lock in while fully loaded with the slide forward. You can download the mag by 1 or load a new mag with the slide locked back. Or just get in the habit of slaping the bottom of the clip to assure it's locked in. If you fire till lock back you shouldn't have anything to worry about, if you do tactical reloads then get used to slaping the mag home.
 

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Without having witnessed the jam I'd say it could very well be the ProMag that is the culprit. If you search many of the gun forums you will find similar stories regarding aftermarket magazines. The general consensus is that if your just goofing off at the range and don't mind the occasional jam, then aftermarket is fine. If you're trusting your life to it, stick with original mags.
 

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Discussion Starter #4
Thank you guys, I hope it means my gun is okay and the problem is caused by ProMags. Could you tell me what is a good source to get a few more factory mags (I think 10 rnds will do just fine)?

Thanks again,
take care

DoctorV
 

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Try CDNN for new factory magazines.
http://www.cdnninvestments.com/walp999mm10f.html
Promags are total junk, avoid them like the plague.
If you reload your pistol from the slide locked back position, the mags will be much easier to insert, and will click in positively. When you load from the slide forward position, you will have to press firmly, especially with the 10 round mags.
 

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Just for a different angle, I use factory mags and promags and have never had a problem...for home defense I only use the factory though!
 

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A common cause for a slide to fail to lock back is your thumb inadvertently riding on top of the slide lock. I do it occasionally with my P99. Nothing's wrong with the pistol in this case.

Tim
 

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Discussion Starter #11
Just FYI

Wanted to tell you guys you were right! I fired 50 rounds with each of my 4 mags, and the perp has been identified: one of the brand new ProMags. I had 2 FTF (round fails to chamber) and 5 or 6 failures to lock back the slide after the last round has been fired. Not a single problem otherwise with the three other mags (two factory MecGars and one ProMag). The gun seems to be as good as it gets (as a Walther p99 should be?


Thanks again for help!
Take care
Val
 

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Understandable...being new to handguns, sometimes sticker shock does get the better of us. I prefer factory mags only for self defense and proven aftermarket (if such things exist) for range & maybe competition.
 
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