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CZ Adjustable Sear in BETA

Discussion in 'Handguns: Autoloaders' started by schmeky, Feb 21, 2011.

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  1. schmeky

    schmeky Member

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    I have developed a CZ sear that has an adjustable safety leg. It consists of a brand new CZ factory sear, but it has been machined, modified, and tested in my machine shop, however, I need to get some of these out in the real world for actual testing.

    I will supply a total of 10 sears for testing. There will be no charge for those that elect to participate. I will supply the sear and shipping. There are stipulations and I will gladly explain the limitations either in a pm or via e-mail at milam_nathan@yahoo.com Please understand, YOU MUST ACTIVELY USE THIS ITEM. I am not merely giving away a free sear.

    This item is intended to eliminate the aggravation and tedious time consuming fitting of the sear safety leg when a CZ Custom Shop competition hammer is installed, or if you modify the stock CZ hammer.

    A special thanks to The High Road Forum for giving me permission to post this.
    [​IMG]
     
  2. WardenWolf

    WardenWolf member

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    You better make absolutely sure they engage the disconnector properly. If not, you, and the person you send it to, are likely going to jail for a LONG time for making a "machine gun".
     
  3. cz75bcrazy

    cz75bcrazy Member

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    I would love to try one I have a cz 75b and have been wanting to get a comp hammer for it but was a little worried about sanding down the leg to make it all fit, how do I sign up? Thanks
     
  4. schmeky

    schmeky Member

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    WardenWolf,

    I assume you are referring to the DA disconnector? If you are referring to the manual safety pad/sear interface, this should not be a problem.

    I have tested this extensively and feel it is ready for beta testing. The sear safety leg is the only area modified. I appreciate your input
     
    Last edited: Feb 21, 2011
  5. cz75bcrazy

    cz75bcrazy Member

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    I cant believe more people haven't jump on this so here a free bump
     
  6. Sam1911

    Sam1911 Moderator

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    I don't suppose the part works in the Omega series guns? (Probably too much to ask.)
     
  7. eerw

    eerw Member

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    I believe the sear is different in the Omega guns.

    The main advantage to this sear is if you are installing or fitting a new or modified hammer.
    Which usually results in a change in the relationship of the sear and the safety that blocks the sear movement. As Schmeky explains his part is adjustable and makes easier this process. instead of modifying or having to replace more parts.
     
  8. larryh1108

    larryh1108 Member

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    Will this work in the 75 COmpact model and/or the 40P model? Thanks.
     
  9. schmeky

    schmeky Member

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    It will work in all "non-decocker" pistols. I have only designed this to work with the standard DA/SA mechanism.

    eerw is correct. I have installed many CZ Custom Shop competition hammers and I keep my first experience in perspective. I ruined sear, and even with experience under your belt, it's still possible to miss the "sweet spot".

    This adjustable sear will allow you to run any CZ hammer, the comp hammer, a standard hammer, or a modified stock hammer, and provide the perfect sear safety leg clearance, every time.
     
  10. railroader

    railroader Member

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    From the sounds of it this sear should make installing a comp hammer very easy. When fitting the sear on my 75 sa I had to put it in and out of the gun over and over until I filed enough material off. With an adjustable sear you can put it in once, adjust it and you are done. Mark
     
  11. schmeky

    schmeky Member

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    Mark.

    Precisely. If the adjustable sear works as intended, it will allow me to offer drop-in trigger kits using either a competition hammer of one of my machined stock CZ hammers. It could greatly simplify upgrading the CZ trigger.

    Either way, the difference in SA trigger pull would be dramatic, and I hope to keep the cost very reasonable.
     
  12. Matt-J2

    Matt-J2 Member

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    If I were able to shoot more often I'd jump on this but I wouldn't be a useful beta tester at this time. I do wish to keep an eye out though for this and other things you may have in development.
     
  13. larryh1108

    larryh1108 Member

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    Too bad. My Compact is the PCR which has a decocker and my 40P also has a decocker. Would have been fun!
     
  14. cz75bcrazy

    cz75bcrazy Member

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    I can't wait to do some Beta testing been working on reloading this week :)
     
  15. schmeky

    schmeky Member

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    cz75bcrazy,

    I should be shipping out some beta sears this week
     
  16. cz75bcrazy

    cz75bcrazy Member

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    Hey sounds great!!! can't wait to try it out.
     
  17. phoenix79

    phoenix79 Member

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    How difficult would it be to put the comp hammer onto a CZ75 with one of these? I'm very mechanically inclined but never taken apart my CZ75 before (other than new mainspring).
     
  18. schmeky

    schmeky Member

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    phoenix79,

    The main problem with doing a hammer upgrade with a CZ is the slightest change in the hammer hooks affects the sear safety leg geometry. This means your manual safety will no longer work. Not good.

    The only recourse is to tediously file and fit the sear safety leg. Sometimes you hit the sweet spot, many times you ruin the sear. A few thousanths of an inch is all you have to work with.

    The adjustable sear will make any hammer upgrade a "drop-in" proposition. It will completely eliminate the guess work and tedious fitting.

    I am shipping out the first batch of beta sears on 3-3-11. Hopefully I will get good input. If so, I will soon offer the sear by itself, or in a trigger kit that will allow most anyone to successfully drop-in an excellent CZ trigger kit.
     
  19. ckone

    ckone Member

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    Schmeky, while I think it's great you're doing something like this and testing out possible goodies for CZs, modding the sear's safety leg to work with an aftermarket or modified hammer's different-than-stock angles is in reality just a good way to give yourself a headache... Yeah it's a PITA, and as you probably know, it's not the ONLY way, which is why most just fit the safety which is easy as pie and takes 10mins tops. Yeah, usually you'd want to alter the cheaper part first, but in the case of a CZ when talking about the difference between a $9 sear and an hour or so of cursing assembling/disassebling and then reassembling the sear-cage vs. working 5-10mins with a file/stone on the $35 safety that's simple and easy to take in and out and hard to mess up, I'll take the safety method every time.

    That said, figure out how to make thin grips that are light and inexpensive too (maybe plastic or even kydex?), and you may be buying a new boat before the summer is through!
     
    Last edited: Mar 2, 2011
  20. schmeky

    schmeky Member

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    ckone,

    I don't disagree at all with what you are saying. But, being a long time 1911 guy, I have been indoctrinated into the "modify the cheapest part" philosophy. It only makes sense.

    I am pretty mechanically inclined, and the first time I did the CZ Custom Shop comp hammer install, I botched the sear. So, I have to consider those that are less mechanically inclined, and keep in perspective my first time install experience.

    The CZ Custom Shop sells a new sear for $32.00 plus shipping. If you could buy a new adjustable sear for around $48.00, plus $3.50 to ship, what would you do?
     
  21. Walkalong

    Walkalong Moderator

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    With advise and a helpful pic via PM from schmeky, I installed a competition hammer on my CZ 97B. I am quite mechanically inclined as well, and I got it right, but trust me, it would be very, very, easy to go to far with it, and I considered myself lucky to get it perfect on the first try. :)

    The result is awesome, and well worth doing.
     
  22. CZguy

    CZguy Member

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    schmeky,

    Are you going to design one for a de-cocker, (PO-1) this thread is making me envious.
     
  23. schmeky

    schmeky Member

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    CZguy,

    I have not seen the sear for a decocker, yet. Since this only involves modification of the sear safety leg, I would need to see a decocker sear. I start with an OEM CZ sear and do eveything else in house from scratch. Here's a pic of the adjustable sear installed in a CZ action to give you an idea:
    [​IMG]
     
  24. JDGray

    JDGray Member

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    More pics

    With Schmeky's permission, I am posting some pics of the installed sear in my 75B-SA. The sear install is very simple, and included adjustment instructions worked perfectly. Since I've worked on my CZs in the past, the install took all of 15min, by simply field stripping, removing the safety levers, removing the sear cage, replacing the sear. My factory hammer has been worked on, and it still has a very nice 1.5# pull after the install. My firing pin block lever has been removed, as the pics will show, and a spacer installed, so the sear was easier to install because of this, but a factory setup wouldn't be an issue if your carefull to not loose the FPB lever and tiny spring off the sear pivot pin as you swap the sear. Not sure if a competition hammer would actually help my pistol since my hammer has been recut, but this sear would be a perfect addition to the job.
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  25. ATBackPackin

    ATBackPackin Member

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    Is this still available? How many rounds would you like to see tested?

    I have a SP01, so I'm pretty sure it would fit. Would love to find out more, so if this is still available feel free to PM me. If not, best of luck.

    Shawn
     
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