Last week I took out my newly acquired Girsan 10mm for shooting for the first time. Two issues prevented me from finishing the session. 1. The front sight was completely shaken off the slide after 16 rounds or 2 magazines. 2. During the 4th magazine, the firing pin stop plate fell out halfway and hang out about 1/2", preventing the slide from going back to slide. Not sure if I should send it back to them for warranty repair since I need to pay shipping both ways.

Welcome BerettaFan, sorry to hear you?re having issues with it. Seems to me that shipping  should be their responsibility considering, but doesn?t always work that way.

That's unfortunate! Even the higher dollar guns can and do have issues! I have never owned a Girsan so I don't know how they do returns on warranty issues. It seems to me, if they don't issue a prepaid shipping label that, not only do you have to pay shipping, you have to find an ffl to ship it for you!

The firing pin stop falling out is a big concern for me.  This should not be possible for several different reasons.

In a tightly fit 1911, it will require some small force to move the firing pin stop even if it is the only part in the gun.  However this is a production 1911 and that is not always the case.  The extractor, ideally, has a similar fit that offers a small amount of resistance to movement.  And again, this is a production 1911 and that is not always the case.

The final item that retains the firing pin stop is the firing pin.  When the chamber is empty, the firing pin can move far enough through the slide to clear the stop and allow it to come out of the gun.  But, when the chamber has a cartridge present, the firing pin should not be able to move that far forward.  The firing pin should be shorter than the distance from the face of the breech to the face of the firing pin stop, but longer than the distance from face of the breach to the back of the firing pin stop.

Firing a gun is a very dynamic action.  Even with an in-spec firing pin, this can be an occasional issue.  As the slide accelerates to the back of the gun, it begins extraction.  As soon as the case mouth is clear of the chamber, a firing pin could still held in place by it's inertia and begin to push forward, "ejecting" the case.  Usually by the time the slide has moved 0.99" that isn't the case, but it would be interesting to see high speed of a gun.

Either your firing pin is shorter than expected, or the headspace more than expected, or you had a one-off.

All this theory is great and all, but the real question you want answered is what you should do about it.  Two options:

Send it back, probably cost you at least $50 in shipping and I won't say I have much confidence that EAA will fix you issue.

--or--

Fix it yourself.

Sounds like a loose front sight is a pretty common issue with these guns and is fixed by some loctite.  If you are like me, you already have loctite, but even if you have to buy some, < $10.

I always replace the firing pin stop with an EGW flat bottom stop anyway, so that would be the suggested route.  Those are $13.50 from Brownell's or $15.00 from EGW.  It will require a bit of fitting. 

If you don't wanna wait or want the "free" option, you can take the firing pin stop out, hold it on it's side with some needle nose pliers on an anvil and gently peen each side face.  This should make it slightly "thicker" at the expense of width.  Go slowly as you don't wanna over-do this. As soon as there is any resistance to putting the stop in a stripped slide, you are done.  This is the bubba option (but I bet it happens at custom gunshops sometimes).

Thank you guys for your advice/suggestions! EAA wants me to send the pistol back for warranty repair, but I have decided to fix it in a DIY way. I am an FFL but both ways of shipping would cost me at least 70 bucks. I probably would start by swapping the firing pin spring. When I moved the FPS back into position the other day, I didn't feel any resistance at all, I guessed it might be due to an extremely weak firing pin spring. I have ordered a wolffe extra power spring from ebay for less than 10 bucks. I will take it out for shooting again sometime in March when it gets warm. If that doesn't work out, I will try swapping out the FPS plate with an EGW one. I didn't have prior experience in fitting a 1911 part, so I'd like to start from the easy one. By the way, I was shooting Underwood ammo when it got problems.

The EGW firing pin stop is the one 1911 part I change regardless.  I am no longer one to "tinker" with parts swapping on guns unless I have an specific problem.

But, a flat bottom firing pin stop on a 10mm 1911 dramatically changes the recoil profile for the better.  It reduces the slide velocity, makes the gun feel "softer" shooting, reduces muzzle flip and smooths out the recoil impulse.  It's like putting in a 22-24 lb recoil spring, but without the negatives associated with a stiffer recoil spring.

It's also a great part for your first part to fit.  All the filing in on the $15 part, so if you screw it up, only out $15.  Also, really easy to actually see what metal needs to be removed.

Alright. It seems like an EGW firing pin stop is something I cannot pass. But browsing EGW website, I am hesitating about which model I should buy. Girsan 10mm has a fully adjustable rear sight and Series 70 internals. Is this the one I should purchase?

https://www.egwguns.com/oversized-firing-pin-stop-series-70-9-38-40-10-blue-cut-for-adjustable-sight

Makes sense to me.  If you don't need the rear sight cut, it will still work, just have a bit of a gap at the top.  If you don't wanna risk the gap, you can file down a standard series 70 stop.

BERRETAFAN, I had the same problem with my hunter FPS. I went back to my dealer because EAA insisted a FFL do the shipping. My dealer paid for it for me BOTH WAYS!
Mine has some serious slop in the frame/slide fit. After 115 rnds! I complained to EAA about its terrible lack of accuracy. Fell on deaf ears. At 15 yrds, it barely hits the bottom of a B27 target!
I really regret buying this Turkish Turd. 

Terdog, I strongly suggest selling it at any cost. I have sold mine at a loss! I am planning to get one from Rock Island (SKU 52008). I have a RI 5" model which performs perfectly.

After reading this and with my own issues with my WITNESS MATCH I have become a "not an EAA Anything fan".  I had magazines dropping out of the pistol after two or three rounds.  Found help here on this site.  Was told to sand 1/32 inch or so off the mag bottom plate.  Worked fine.  Next the front site flew off.  I was lucky, I found it at an out door range.  Fired one round with out the front site and watch the trajectory of the front of the barrel/slide.  Went over in the general direction I thought the site would go and after about 30 seconds of searching I found in about three inches of grass.  I used a spot of wood glue to secure when I reinstalled it.  Next issue, yet to be resolved is when you insert a loaded magazine with the slide locked back and give it a pop up the slide releases and loads a round.  Have to make sure the safety is on when you drop the magazine before inserting the next one.  I have come to terms with this though.  Keep pistol pointed down range when loading and safety on.  It actually makes for a faster reload as you don't have to reach for the slide stop.

I like the 14+ that the pistol holds and it is accurate.  Bottom line is you get what you pay for.  My Razorback has been flawless right out of the box as has my Colt Delta Elite.

I think it's garbage they won't just email you a shipping label for return, it's their broke pistol, they should at least have the customer service to fix it. I had a problem with my new s&w 2.0 10mm, jam o magic right out of the box. They sent me an email with return label and shipped it back to me, free of charge,  fixed perfectly....makes me not want a girsan for sure. Sounds like the 1911 guys here got your back, I'm also taking notes on their advice.

I agree.  When I described my issues to them they said send send it back, ...at my expense.  $40.00 in shipping versus $12.00 for a Wolff replacement spring.  Do the math.  The safety is mushy and needs a new spring as well.  Will never, ever buy anything EAA again.

I didn't wan t to sell it and pass it on to someone else.

I got lucky in realizing the my FFL got it from Davidsons and they gave my FFL a new replacement. My FFL gave me a refund.