Author Topic: MCARBO CZ 75b trigger spring kit review.  (Read 12647 times)

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Offline jokester945

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #90 on: September 30, 2019, 01:30:05 AM »

[/quote]Your bottom up from magwell looks like it is problematic.

The trigger bar support spring has rounded loops that should ride in the channels of the trigger bar.

At no point should it contact the frame.

It looks like yours is contacting the frame and potentially causing it to bind.

But it's hard to tell from the pics.


The second thing to do is adjust this spring to make sure there is enough tension on it.

I believe Schmecky from CGW detailed how to do this.
[/quote]

I went in all the way, removed the sear cage so polishing all contact points. The inside walls of the frame were really rough, so took some 1000 grit to them and feels much better, both where the trigger bar is and the trigger itself. Also polished the trigger bar, and sear cage contact points, and the rails too. However, I broke the lifter spring it got caught in the frame hole and snapped! So I'm still sidelined, ordered some lifter springs and a few other springs too. Hopefully, I'll get them by Wednesday. When I put it all back together I'll make sure I watch the support spring.
 

Offline Underwhere

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #91 on: September 30, 2019, 06:23:43 AM »

I went in all the way, removed the sear cage so polishing all contact points. The inside walls of the frame were really rough, so took some 1000 grit to them and feels much better, both where the trigger bar is and the trigger itself. Also polished the trigger bar, and sear cage contact points, and the rails too. However, I broke the lifter spring it got caught in the frame hole and snapped! So I'm still sidelined, ordered some lifter springs and a few other springs too. Hopefully, I'll get them by Wednesday. When I put it all back together I'll make sure I watch the support spring.
 
If you're talking about the lifter for the firing pin block, you can remove the firing pin block altogether for testing.

When you reassemble the support spring be careful not to over torque the screw. When that happens you twist the support spring and if ends up grinding it into the frame on one side, ensuring that it does not ride properly in the trigger bar.

Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #92 on: October 04, 2019, 05:25:51 PM »
I picked up the new polished stainless CZ75b on Wednesday and took it to the range that same day and ran 200rds with no problems.  Back to the range today for another 200rds with no problems. Now I know there's no factory problems and can install another MCARBO kit.... :)





« Last Edit: October 05, 2019, 10:08:15 AM by Rmach »
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #93 on: October 08, 2019, 01:12:36 AM »
Installed the third kit in the new stainless 75b.  This install didn't go as smoothly as the other two. Punched out the trigger roll pin, and the roll pin punch was stuck solidly in the frame hole and would not come out.  I was able to pull the roll pin out, but the 3/32 punch was stuck really good.  I went to the store and bought another punch to bang it out from the other side, but that only broke the new punch. The original punch sheared off later, with about about 3/4" of the shaft remaining, because I was twisting the original punch trying to remove it.

Next step was the local gunsmith since I'm lacking the tools to remove this stuck punch.  Anyway, $65 later the gunsmith was finally able to remove it by using a drill bit to relieve the pressure and soaking it in lubricant.

I have absolutely no idea why the punch got stuck that bad in that bleep hole in the first place.  A 30 minute trigger spring kit install turned into a several hour nightmare.

I finally finished the install after this headache. I didn't put a the pull gauge on it, but' it's close to the others. A very good bonding experience.
« Last Edit: October 08, 2019, 11:28:56 AM by Rmach »
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline jokester945

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #94 on: October 08, 2019, 02:20:17 AM »
Installed the third kit in the new stainless 75b.  This install didn't go as smoothly as the other two. Punched out the trigger return roll pin, and the roll pin punch was stuck solidly in the frame hole and would not come out.  I was able to pull the roll pin out, but the 3/32 punch was stuck really good.  I went to the store and bought another punch to bang it out from the other side, but that only broke the new punch. The original punch sheared off later, with about about 3/4" of the shaft remaining, because I was twisting the original punch trying to remove it.

Next step was the local gunsmith since I'm lacking the tools to remove this stuck punch.  Anyway, $65 later the gunsmith was finally able to remove it by using a drill bit to relieve the pressure and soaking it in lubricant.

I have absolutely no idea why the punch got stuck that bad in that bleep hole in the first place.  A 30 minute trigger spring kit install turned into a several hour nightmare.

I finally finished the install after this headache. I didn't put a the pull gauge on it, but' it's close to the others. A very good bonding experience.

Funny, I'm having a similar problem but with the sear cage. I bought a new punch set because the cheapo one I was using wasn't cutting it, I even tried an Allen wrench but I bent the hell out of that. Ideally, I should have the punch set by Wed. but I agree this has been a great bonding experience, I can rebuild the sear now in under 5 min. and have polished up everything inside as well.




Offline Earl Keese

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #95 on: October 08, 2019, 06:17:36 AM »
Installed the third kit in the new stainless 75b.  This install didn't go as smoothly as the other two. Punched out the trigger return roll pin, and the roll pin punch was stuck solidly in the frame hole and would not come out.  I was able to pull the roll pin out, but the 3/32 punch was stuck really good.  I went to the store and bought another punch to bang it out from the other side, but that only broke the new punch. The original punch sheared off later, with about about 3/4" of the shaft remaining, because I was twisting the original punch trying to remove it.

Next step was the local gunsmith since I'm lacking the tools to remove this stuck punch.  Anyway, $65 later the gunsmith was finally able to remove it by using a drill bit to relieve the pressure and soaking it in lubricant.

I have absolutely no idea why the punch got stuck that bad in that bleep hole in the first place.  A 30 minute trigger spring kit install turned into a several hour nightmare.

I finally finished the install after this headache. I didn't put a the pull gauge on it, but' it's close to the others. A very good bonding experience.
This is why CGW recommends using a starter punch.

Offline Underwhere

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #96 on: October 08, 2019, 07:40:48 AM »
Installed the third kit in the new stainless 75b.  This install didn't go as smoothly as the other two. Punched out the trigger return roll pin, and the roll pin punch was stuck solidly in the frame hole and would not come out.  I was able to pull the roll pin out, but the 3/32 punch was stuck really good.  I went to the store and bought another punch to bang it out from the other side, but that only broke the new punch. The original punch sheared off later, with about about 3/4" of the shaft remaining, because I was twisting the original punch trying to remove it.

Next step was the local gunsmith since I'm lacking the tools to remove this stuck punch.  Anyway, $65 later the gunsmith was finally able to remove it by using a drill bit to relieve the pressure and soaking it in lubricant.

I have absolutely no idea why the punch got stuck that bad in that bleep hole in the first place.  A 30 minute trigger spring kit install turned into a several hour nightmare.

I finally finished the install after this headache. I didn't put a the pull gauge on it, but' it's close to the others. A very good bonding experience.

I do this because when I started with CZ's early in I had to learn a lot quickly and I paid more because I didn't have the right information.

Here is what I learned:

1. Modifying these guns is expensive but the potential gains are incredible. When complete these guns are by far the best handguns I own.
2. Always use a floating trigger pin. You shouldn't reuse the flared pin
3. Buy a starter pin to remove the factory flare. Normal punches aren't as effective and you risk damaging parts.
4. Replace the firing pin retaining pin with a hardened one.
5. Use an O-ring to dry fire.

I'm sure there are more.

When I started modifying my CZ's I didn't buy a starter punch and didn't buy a floating trigger pin. As soon as I sat down to disassemble the gun I struggled with the pin. I realized instantly that I couldn't use it again. Guess what. I had to go buy one and pay shipping costs a second time and wait a few days for it to arrive. I also picked up a starter punch. That cost me more money and more hassle. It was a learning experience.

I quoted my comment from earlier.
I guess you learned your lesson (I hope).

I'm not trying to gloat... Only trying to prove a point that the rest of us have been trying to articulate and you seem adamant to argue.

It looks like any cost savings you experienced are out the window and you still don't have the floating trigger pins  or a starter punch to do this properly.

I know exactly what you went through. I did the exact same thing myself. As I mentioned in my post I now have a starter punch and out floating trigger pins on all my guns. I suggest you do the same.

Hopefully you haven't enlarged the hole large enough that a floating trigger pin still fits and won't walk itself out. You can use some red loctite in order to try and keep it in there if that's the case.

Also, please stop promoting this kit unless you also provide the disclaimer that you'll need to buy a starter punch and floating pin from someone else. That completes this kit in my opinion and you are proof that is the case. I wouldn't want someone else to experience what you just did. (though I appreciate your honesty and posting about it)



Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #97 on: October 08, 2019, 10:39:03 AM »
Installed the third kit in the new stainless 75b.  This install didn't go as smoothly as the other two. Punched out the trigger return roll pin, and the roll pin punch was stuck solidly in the frame hole and would not come out.  I was able to pull the roll pin out, but the 3/32 punch was stuck really good.  I went to the store and bought another punch to bang it out from the other side, but that only broke the new punch. The original punch sheared off later, with about about 3/4" of the shaft remaining, because I was twisting the original punch trying to remove it.

Next step was the local gunsmith since I'm lacking the tools to remove this stuck punch.  Anyway, $65 later the gunsmith was finally able to remove it by using a drill bit to relieve the pressure and soaking it in lubricant.

I have absolutely no idea why the punch got stuck that bad in that bleep hole in the first place.  A 30 minute trigger spring kit install turned into a several hour nightmare.

I finally finished the install after this headache. I didn't put a the pull gauge on it, but' it's close to the others. A very good bonding experience.

I do this because when I started with CZ's early in I had to learn a lot quickly and I paid more because I didn't have the right information.

Here is what I learned:

1. Modifying these guns is expensive but the potential gains are incredible. When complete these guns are by far the best handguns I own.
2. Always use a floating trigger pin. You shouldn't reuse the flared pin
3. Buy a starter pin to remove the factory flare. Normal punches aren't as effective and you risk damaging parts.
4. Replace the firing pin retaining pin with a hardened one.
5. Use an O-ring to dry fire.

I'm sure there are more.

When I started modifying my CZ's I didn't buy a starter punch and didn't buy a floating trigger pin. As soon as I sat down to disassemble the gun I struggled with the pin. I realized instantly that I couldn't use it again. Guess what. I had to go buy one and pay shipping costs a second time and wait a few days for it to arrive. I also picked up a starter punch. That cost me more money and more hassle. It was a learning experience.

I quoted my comment from earlier.
I guess you learned your lesson (I hope).

I'm not trying to gloat... Only trying to prove a point that the rest of us have been trying to articulate and you seem adamant to argue.

It looks like any cost savings you experienced are out the window and you still don't have the floating trigger pins  or a starter punch to do this properly.

I know exactly what you went through. I did the exact same thing myself. As I mentioned in my post I now have a starter punch and out floating trigger pins on all my guns. I suggest you do the same.

Hopefully you haven't enlarged the hole large enough that a floating trigger pin still fits and won't walk itself out. You can use some red loctite in order to try and keep it in there if that's the case.

Also, please stop promoting this kit unless you also provide the disclaimer that you'll need to buy a starter punch and floating pin from someone else. That completes this kit in my opinion and you are proof that is the case. I wouldn't want someone else to experience what you just did. (though I appreciate your honesty and posting about it)

Well the other two installs went fine with the roll pin punches I have. The hole wasn't enlarged, only a slight radius was done where the tip of the punch was almost sticking out through the first section of the frame block. The factory trigger pin looked ok, so it was reinstalled, just like the first kit install.   

I have nothing more to promote since I ran out of CZ's that required better trigger pulls. Saying you need the tools to do the job does not require a disclaimer, that's rather obvious. 
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Underwhere

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #98 on: October 08, 2019, 10:45:39 AM »

Well the other two installs went fine with the roll pin punches I have. The hole wasn't enlarged, only a slight radius was done where the tip of the punch was almost sticking out through the first section of the frame block. The factory trigger pin looked ok, so it was reinstalled, just like the first kit install.   

I have nothing more to promote since I ran out of CZ's that required better trigger pulls. Saying you need the tools to do the job does not require a disclaimer, that's rather obvious.

It didn't seem obvious to you.

How did you re-flare the factory pin?

Clearly your post has motivated other people to buy the MCARBO kit which you have been claiming to be a cost savings but did not account for the other items necessary to make this a complete install. (that is my opinion based on my experience)

I hope they are reading this and chose to buy the floating pins and starter punch if they decide to do this again or are struggling with their kit.

I have made a bigger mistake than you... Not using a starter punch I scraped the frame on a unicorn CZ removing the trigger pin. So now I'm going to likely refinish the entire frame.
« Last Edit: October 08, 2019, 10:50:30 AM by Underwhere »

Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #99 on: October 08, 2019, 10:54:16 AM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Underwhere

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #100 on: October 08, 2019, 11:29:32 AM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
You're probably fine...until you aren't one day. 400 rounds is not really a lot. I have seen people with problems with CZ's and they present at much higher round count. A common consumable is the trigger return spring. You'll need to remove the trigger pin to replace it.

If you plan on removing the trigger in the future for whatever reason I don't see how banging it out with a roll pin punch and re-flaring is going continue to go well. You've already seen how it can go wrong and that didn't account for re-flaring.

I've said it so many times already. I would advise to buy a floating trigger pin and starter punch. We aren't talking a ton of money here. You've already spent $65 on the gunsmith. I think that would cover 3 floating trigger pins, 1 starter punch as well as shipping.
 


Offline Earl Keese

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #101 on: October 08, 2019, 11:38:52 AM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
This adds so much to your credibility.  ::)

Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #102 on: October 08, 2019, 11:51:15 AM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
This adds so much to your credibility.  ::)

Be more specific.  If you are trying to be an idiot, you succeeded.  If not, I apologize.
« Last Edit: October 08, 2019, 11:59:39 AM by Rmach »
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.

Offline Earl Keese

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #103 on: October 08, 2019, 12:23:51 PM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
This adds so much to your credibility.  ::)

Be more specific.  If you are trying to be an idiot, you succeeded.  If not, I apologize.
Only one of us looks like an idiot here. Have you ever changed a tire? How many lug nuts do you leave off? Surely they aren't all necessary.

Offline Rmach

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Re: MCARBO CZ 75b trigger spring kit review.
« Reply #104 on: October 08, 2019, 02:05:59 PM »
Two punches to re-flare, if that becomes necessary. The first one I did has not been re-flared, and it's holding fine so far after 400rds fired.
This adds so much to your credibility.  ::)

Be more specific.  If you are trying to be an idiot, you succeeded.  If not, I apologize.
Only one of us looks like an idiot here. Have you ever changed a tire? How many lug nuts do you leave off? Surely they aren't all necessary.

Yep, I was right.  The self proclaimed genius has spoken with a fitting analogy that supports his IQ.
CZ Shadow 2 Orange, S2 urban gray, S2 black and blue, 3 polished stainless 75b's and a black 75b all with MCARBO kits and front Dawson FO.