Problem with CZ-52: Hammer drops with slide

[Fabi75]

I bought the following product from makarov.com: CZ52-2: Harrington Products competition firing pin and trigger enhancement.

I installed the new firing pin as well as the new firing pin retractor. The problem I have now is that when I let the slide slip forward to load the weapon the hammer drops together with the slide and a shot is fired ... needless to day this is somewhat dangerous and definately not the way it should be. I understand that quite a few other people installed this product and do not have that problem. What's the problem of my weapon?

I made some detail pictures of my weapon. If other pictures are needed please let me know.

http://img155.imageshack.us/img155/4552/cz521he5.jpg
http://img155.imageshack.us/img155/5408/cz522we0.jpg
http://img112.imageshack.us/img112/9386/cz523dx6.jpg

Thanks for your help,

Fabian

 

[Fabi75]

Two things I found out:

The manual safety of the pistol does not prevent the problem.

The grips do not cause the problem.

Any ideas?

 

[SDC]

I'd re-install the original pieces and see if it still happens; if it doesn't, then I'd say your new firing-pin parts are interfering with the hammer-drop safety, and you'll have to find out exactly how the new and old parts are different.