Czech Duo Pistol Info?

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Thank you

Thanks for the info. I found Numrich gun parts corporation sells many parts for these, including the 6 round magazines (but they're currently out of firing pins and the firing pin spring guides that I need) I'll keep my eyes open, and thanks again for the help!
 
stonemovies: I have a CZ DUO just like yours. My Uncle brought it back from WW11 and he gave the DUO and a P-38 to my Dad. I have shot both of them since I was very young and I am 69 now. My Dad left his guns to me when he past away. Both the DUO and the P-38 are in real good shape as far as I know, and I shoot them several times a year. Always on the look out for a box of 25 APC`s and belive it or not my 25 cal DUO shoots pretty darn good IMHO. It is a lot more than a telephone booth gun like you hear all the time. I hope you get your gun up and running and enjoy it as much as I do mine. If you don`t mind keep me posted on how it shoots. I bet you are going to keep it. Good Luck To You:
ken
 
The search might be helped if you realize that the firing pin, spring and guide of the Colt VP interchange with those of the Browning Models 1906, 1910 and 1922.

Jim
 
Thank you Thank you

I bought firing pin and guide for a colt 1908 auto, and I bought two original magazines for it. Now I'm waiting on the mail. This is definatly a gun I'm looking to keep for a while and shoot quite a bit once I get it working again. Once I get that far I throw up a video on youtube and post a link to it on this thread. Thank you all!
 
I have a Duo marked 44 on the slide along with the correct marking for manufacture during the German occupation. It has no firing pin nor firing pin guide, both of which I have sourced, from Wisners and Numrich respectively.
From what I can guess, the firing pin also acts as the ejector as I can find nothing that would function as an ejector nor any notations on the parts breakdown about an ejector.
As noted on several earlier posts, the grips appear to be original and are of differing darkness.
Any comments or education for me?
The pistol is interesting to me as it came from my grandfather's estate to my father in 1955, then to me in 1998 in a box with other non functioning pistols.
Three of my uncles served in the army during WW II and could have brought back the Duo. They're all long gone now so no way to know.

Roger
 
Yes, the firing pin is the ejector; when the slide comes back, the front of the firing pin pokes out of the firing pin hole in the slide and kicks the empty case out the ejection port. The guns that share the firing pin system (FN 1906, 1910, 1922 and Colt Vest Pocket 1908) work the same way.

Many users have had the long firing pin tip break off, find that the gun still fires, but can't understand why it doesn't eject.

Jim
 
Thanks Jim for the information.
Perhaps I should order more than one firing pin from Wisners, if the firing pin
nose breakage is common?

Roger
 
I wouldn't call breakage common, but having a spare firing pin is not a bad idea. If your luck runs like mine, having a spare will absolutely ensure you will never have another firing pin problem!

Jim
 
I got the firing pin from Wisners and a new recoil spring from Numrich.
I took the Duo to my club today. I first loaded the mag with one round, chambered & fired properly. Then loaded two rounds, chambered & fired properly.
Then filled up the mag with all 6 ( ! ) rounds & fired them all.
The pistol simply worked properly.
No problems, no jams, no nuttin but bang bang bang - etc.
Ejection was strong and about 6 ft away at about 2: O clock.
Accuracy was about 1/2" at 200 millimeters.
(The sights are a groove machined down the top of the slide)
This is a really good pistol. John Moses Browning (Peace be upon him)
designed a fine pistol and CZ did him right with their manufacture.

Roger
 
Huh? An inch is 2.54 cm. 25.4 cm is about 10 inches, and 200 mm is about 8 inches. But 20 meters is about 22 yards; as good as the DUO is, a 1/2" group at that range is VERY unlikely from a .25 ACP pistol.

I am glad the old DUO is working again, but I think a review of English/Metric conversion is in order.

Jim
 
Thanks for the correction Jim. I meant 25.4 millimeters but my fingers did not obey....:uhoh:

I thought it was odd that anyone would shoot a target from 200 millimeters, I rarely shoot at any target closer than 10 feet with a pistol.
 
Ahhhh, the 200 mm distance was tongue in cheek my friends, No-one will be entering bullseye matches with a .25 acp. If it goes bang every time and the bullet hits something in front of the gun, that's enough for me.

Roger
 
Duo Issue...

Hi guys. Great thread for duo owners here. I recently picked up a 1944 duo in great shape only to discover the firing pin assembly was missing.. I used the info here to find the parts i needed but am still having an issue. I did use a colt vest pocket spring and suspect that may be my issue.. What is happening is that the firing pin is not catching on the sear. Its not even trying and slipping. There doesn't seem to be any interaction between the two parts. Anyone ever run into this? Everything seems to funtion correctly while apart but once back together, its a no go. any ideas?
 
The problem..

So, I've been working on this issue and realized that the new firing pin stop (block on the bottom that fits into the slide) is rectangular on the colt vest pocket pin I bought from numrich. If you look at the picture on Czech13's post that shows the duo firing pin, you can see that the block is an almost perfect square shape. What's happening with mine is that the extra material is not allowing the firing pin to catch the sear when the slide is in the full rear position. It needs almost another 16th of an inch of travel to reach the catch. (the same amount as the extra material) It's seems that some fitting will be necessary to get proper function. I wanted to note that here in case anyone else runs into this issue.

***WARNING***
If you modify your firing pin yourself, you are taking your safety and that of others around you in your own hands!! The angles on each part are critical to ensure safety and proper function! Improper fit can result in a completely unsafe firearm and negligent discharge! Please be careful! If you aren't experienced in this procedure please take your gun to a qualified gunsmith.

That being said, I did want to let other duo owners know that this may be an issue when using Colt VP parts. Good luck fellas and happy shooting!
 
Thanks. I and many others sort of assume that folks who post about obtaining or installing parts understand that not all parts, even those specifically designated as being for the gun in question, will function properly without fitting. That is not only the situation when, as here, the parts are going to be very similar but perhaps not identical. It is also a concern with parts obtained from parts houses, who often have the most requested parts manufactured for them. (Most of those original Colt parts ran out many moons ago; those being sold today are repros; they are generally OK, but may need fitting even for installation in a Colt pistol.)

Jim
 
DARN`T GUYS: I have shot my DUO every since I was a kid (( just turned 70 )) and never had a problem or even thought of haveing a problem with my gun. I am always on the lookout for a box of 25 acp`s. Now I am going to worry about haveing trouble with mine if I continue to shoot it like I always have. Because I can`t fix anything. Also befor I found this site I had taken my DUO to a lot of Gun Shows and very few even knew what I had or even seen one befor. So much for all thoes Gun Show comando`s.
ken
 
10-4 Jim. I only assumed it would be a drop in fit because of the other experiences posted here. I did want to share, after I realized what was going on, so anyone else that stumbled on to the page would realize that there may be fitting necessary. BTW, after fitting the parts, the gun functions flawlessly. Thanks for the info guys!
 
That is great news, and I am happy to have been of assistance.

Jim
 
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