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I have that line in my gun and others have reported the same. Looks like its normal and part of the design of the piece. I noticed that there is a slight notch at the top of the line that may have been put there as a stress relief.
 

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Your new metal pin doesn't seem to actually touch that line. My plastic pin looks like it does. (bad eyes) I wonder if that is part of their fix? Use a smaller metal pin. If so, that makes me wonder what change they may have made down lower where the other cracks have started.
 

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My new .40 has a manufacture date of August 07', it has the newer metal pin and the vertical line near the pin. Polymer has a smooth texture. I'll be watching it closely to see if any stress occurs to the polymer on the right side. So far so good.
 

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FNP-40 Cracked hammer group

I picked this FNP 40 up on 2-2-08 and was exciited to get it! I found your forum and found this thread. It got me curious. So without ever firing a round out of it, taken right out of the display case at the gun store.
I went home and pulled the slide. Guess what? Mine is already broken!
It was the last one in the display case and the last one in the store!
Obviously there is a manufacturing defect or defective hammer groups installed in these guns to the extent we do not know! But what Police
officer's, military, or CCP holder, homeowners life is it going to take before FNH USA is going to address it? Since the serial # range is of the problem guns is not forthcoming from FN, I will start it here! The list begins! serial # 61CMT059** . Let's find out for ourselves or at least try!
Maybe then FNH will address it. To say the least I am very dissapointed &
dismayed that these guns could be released with this problem!

I can't figure out how to post a picture. Can anyone help me here?






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FNP-40 Cracked hammer group

Here are some pics of Problem of the FNP 40 from my last post.

 

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FNP-40 Cracked hammer group

More pics!
 

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FNP-40 Cracked Trigger/hammer group

Did I mention that I have a FNP-9 in layaway and I am very concerned it could have the very same problem. I am torn about what to do. I really did like the design better than the S&W M&P, Of which I have one in 9mm.
I am thinking of chucking both these FN's for a SIG. (s) :(
 

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FNP-40 Cracked Trigger/hammer group

Update!
Okay I got off the phone with the gun dealer who is also a large law enforcement dealer. The dealer said that"FN was well aware of the problem" and would send out a call tag for the pistol and I would have it back in "2 weeks" I asked about the FNP 9 in layaway and they said they would check it. (whatever that means) I told them to give them the serial #. They have to know the range of the problem hammer groups!! So I will take a wait and see. With all the guns sold they surely got some bad parts? To FN's credit, customer service seems to be top notch.
 

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That was one reason I wasn't deterred from buying this gun. From all accounts FN has dealt with the issue in a professional manner. I'm hoping mine is a recent enough build that it won't occur, but I'm prepared in the case that it happens.
 

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I wouldn't hesitate to buy another FNP. I have no doubt that any with problems out there will be made right. Even with one with cracked hammer housing, have put just under 1000 rounds thru both FNPs with no malfunction with any of ammo tried. Both are as accurate as the most accurate pistols I own. Amen on FN cutomer service! :?
 

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venison-hunter

Wow,..... sorry to hear that venison-hunter. Well my serial # is 61CMR03*** and so far I have 556 rounds through it with no problems. By your serial # it would seem that yours was made after mine. With that being said the problem seems to be more wide spread than I originally thought. At first I thought it was late 06 early 07 batch. What was the date on your shell case?
 
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