MCARBO CZ 75b trigger spring kit review.

[Tok36]

Just installed my kit in my P-01, except for the sear spring (might tackle that later.). 

I followed their video, but not in same order.  started with the hammer spring, and had some trouble with the mag guide afterwards when the magazine wouldn't drop free.  Finally got the top attachment of the mag guide to seat properly and it worked fine.

struggled with the trigger spring for a while after it popped out and sent the alignment pin flying across the floor and never did find it.  but that finally worked out.

But lastly, after I replaced the firing pin (FP) spring, FP block spring, and FP retaining pin, I now again have the problem with the mags not dropping free again.   checked the mag guide again but no luck.  what am I missing?

This seems like a stupid question because I don't see how, but do the weaker FP spring and/or FP block spring somehow reduce the force that ejects the magazine?

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Nope, the mag tube must be hanging up on something.

[Rmach]

Take your grips off and see if the mag drops freely. 

[45coltnut]

I agree with your assessment!

I’m new to CZs. Recently bought a Shadow 2 SA and was instantly hooked. sA trigger at 2lbs dead one with no creep or over travel.

So, I went and bought a P-01. Now, I’m not a DA/SA guy and really wanted the Omega. But, as you probably know they are scarce right now.

Anyways, I purchased the MCarbo kit for it and WOW. DA is at 6.5 from 10 kbs. SA is at 2.25 from 4.5lbs. Overall, such a huge improvement. So much, even this ole fat boy can hit the target on the first DA shot. First pistol I’ve ever been able to do that with. Such an awesome carry gun!

If anyone has any inclinations on going with MCarbo....do it!


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[zeebo]

I own an SP01 with a CGW pro package, PCR with CGW pro package and a CZ97BD with a CGW pro package. For my P01, I decided to just try the MCarbo spring kit and compare it with my CGW CZs. I polished the P01's internals and installed the MCarbo parts. Unfortunately, I didn't have a trigger gauge prior to polishing the internals so I can't give before and after trigger pull figures but did end up with a 5lb 4oz DA and 2lb 3oz SA (avg of 10 pulls each), which are comparable with my CGW CZs and slightly better than my PCR. Nice! The actions on the CGW CZs are still nicer, but that'ts to be expected with new hammers and short reach triggers, etc. But for the money, the MCarbo kit seems to be a great value. I only have 2 knocks on the kit: 1) the slave pin for the sear cage isn't long enough if you want to use it to completely remove the cage - that was too bad but luckily I had one from CGW (but you don't have to completely remove the cage to install the MCarbo kit so I get it) and 2) the main spring is longer than the CGW spring of the same weight and a bit more fiddly to install. Minor gripes really. I'm glad I tried the kit and think it'd be fun to do a combo MCarbo kit and CGW kit (MCarbo kit along with its weaker sear spring and CGW parts including with weaker firing pin block lever spring, new hammer and short reach trigger CGW).

Along with the Mcarbo kit, what other parts would someone recommend from CGW to help with smoother action?  I am debating between the Mcarbo kit and the CGW kit or doing the Mcarbo spring kit with some CGW parts for my p01 and also for when my sp01 comes in.

thanks

[Rmach]

An email I received from Mcarbo:

Less than 6 hours left of Christmas Sale...Last one for 2020!

Use this 15% OFF coupon code at checkout: Merry Christmas Brotherhood

[mistercmath]

I own an SP01 with a CGW pro package, PCR with CGW pro package and a CZ97BD with a CGW pro package. For my P01, I decided to just try the MCarbo spring kit and compare it with my CGW CZs. I polished the P01's internals and installed the MCarbo parts. Unfortunately, I didn't have a trigger gauge prior to polishing the internals so I can't give before and after trigger pull figures but did end up with a 5lb 4oz DA and 2lb 3oz SA (avg of 10 pulls each), which are comparable with my CGW CZs and slightly better than my PCR. Nice! The actions on the CGW CZs are still nicer, but that'ts to be expected with new hammers and short reach triggers, etc. But for the money, the MCarbo kit seems to be a great value. I only have 2 knocks on the kit: 1) the slave pin for the sear cage isn't long enough if you want to use it to completely remove the cage - that was too bad but luckily I had one from CGW (but you don't have to completely remove the cage to install the MCarbo kit so I get it) and 2) the main spring is longer than the CGW spring of the same weight and a bit more fiddly to install. Minor gripes really. I'm glad I tried the kit and think it'd be fun to do a combo MCarbo kit and CGW kit (MCarbo kit along with its weaker sear spring and CGW parts including with weaker firing pin block lever spring, new hammer and short reach trigger CGW).

Along with the Mcarbo kit, what other parts would someone recommend from CGW to help with smoother action?  I am debating between the Mcarbo kit and the CGW kit or doing the Mcarbo spring kit with some CGW parts for my p01 and also for when my sp01 comes in.

thanks

Zeebo,
I have used the Mcarbo kit in my 75B Omega and the CGW Ultra-lite Kit in my SP-01 and 97B. I think I like the Ultra-lite kit better. It has a stronger firing pin included and gives me more confidence in safely dry firing them.

[Hahn-key]

Just bought a Sp-01 tactical and didn’t really think I would get into gunsmith work but here I am. I bought the Macarbo kit just to get my feet wet based on a few reviews and price and it definitely has reduced the trigger pull very noticeably. I didn’t fool with the sear cage because while I was waiting for my kit to come in the mail I began to read all the great things about CJW. I’m going to wind up getting their tune kit and swap all the parts out with theirs. I’ve already swapped out my guide rod, recoil spring and put in the old style trigger.
The Mcarbo video was excellent and I am very happy with the trigger pull after I put in the kit.

[dudester]

I just installed the Mcarbo kit in my new PCR minus the sear spring. It reduced the DA to a more manageable pull and I don’t want the SA to be any lighter. I didn’t install the sear spring because I don’t understand enough about what effect it has on performance vs reliability and now that I have done it, I feel like it is right where I want it to be for a carry gun. I may get the CGW ultra light kit to compare just because I am curious but it is good to go as-is.

[M1A4ME]

I recently (2 months ago??) ordered three Mcarbo spring kits for non-CZ pistols.

Installed the first one in my 1.0 M&P 9MM.  At the same time I also installed an Apex trigger (just the trigger).  This old frame has a brand new PC 5" slide kit on it.  By the way, the ported barrel/slide really does reduce muzzle rise.  I was sort of "iffy" about that till I went to the range with it and noticed it all on my own while testing some loads.

When I took the slide apart I noticed the Mcarbo striker spring was longer than the factory striker spring.  Hmm??  Figured maybe the Mcarbo spring was a smaller wire diameter or different metal, etc.  I installed the Mcarbo firing pin block spring and striker spring and put the new M&P springs in the bag.  Put the plates back on the slide and laid it over to the side of the "work" towel.

Then I took the frame parts out, installed the new Apex trigger on the trigger bar.  Put the sear spring in and the trigger return spring and put it all back together.  By the way, the flat ended slave pin supplied with the Mcarbo spring kit to help with the trigger return spring makes for a very aggravating install.  Multiple attempts to get the trigger/spring back in place with failure after failure.  I noticed the Apex slave pin, which is rounded on one end, in the Apex bag and grabbed it and got the trigger/spring back in on the first attempt.  That rounded end on the Apex slave pin helps the pin slide out (as the trigger pin it pushed into the frame) without hanging up on the wire of the trigger return spring.  Toss the flat ended Mcarbo slave pin and use an Apex slave pin, or spend some time rounding off one end of the Mcarbo slave pin, or prepare for frustration.

Anyway, all back together, pencil test showed good striker contact (no timing issue with the striker impacting the striker block on it's way to the primer).  Then I put the trigger pull gauge on it.  Wow.  Not a good wow.  Trigger pull was heavier than with the stock parts.  Nice and crisp, but heavier. 

Then, remembering the Mcarbo striker spring was longer than the factory spring I took the slide apart again and re-installed the factory striker spring and dropped the trigger pull by 1/4 lb. 

As it stands I've got a nice crisp trigger pull but no where near what my Apex M&P trigger kits gave me on the 2.0 M&Ps.

I have not gotten around to installing the other two Mcarbo spring kits in the non-CZ pistols. 

I'll admit, right now, I did not spend the time with the dremel polishing all the parts the Mcarbo videos show them polishing prior to reinstalling them.  The frame already had the Apex hard sear in it and that part didn't need polishing.  I did not polish the "dog leg" on the striker where it contacts the sear.  The PC striker block bottom came radiused and polished (looked like an Apex ultimate striker block I'd installed in the other 1.0 M&P).

I know, not a CZ, not a hammer fired gun, but just my experiences with one of three kits I bought.

[dudester]

Thanks for sharing that. I ordered another kit for my Baretta 92FS so we’ll see how that goes. I have the old Apex kit in my wife’s MP Shield which is her main carry gun. Never a problem.

[Rmach]

It's coming up on two years now, and my four Mcarbo CZ75b installs are all running like purring kittens.   My trigger pulls are ~3# in SA and 7.7-8.0# in DA. Thousands of rounds have been fired with zero issues.

[dudester]

FWIW I haven’t done any polishing yet.

[jesuvuah]

Good to hear.

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[recoilguy]

I have had nothing but good experiences with the kits I've ordered as well.
Made a lot of very good shooting guns easier to get the most from them.

RCG

[mrcabinet]

I'm glad others have had good luck with Mcarbo, but my experience with them has been less than impressive. The first "kit" I ordered from them was one for the Ruger Camp 9, which I see they no longer offer. The instructions were good, but it did absolutely nothing for it. Zip, nada. I did some polishing while it was apart which did make it smoother. Second was the Ruger LCP kit with the flat trigger too. I consistently got light primer strikes and the trigger return spring was so light that I had to physically push the trigger forward after firing. And yes, I polished just about everything I could while it was apart. Put the stock return and hammer spring back in and it runs fine. Smoother with a 3/4 lb. less pull weight.

A couple months ago I ordered their kit for my 75BD project, more out of curiosity and laziness than anything else. Before installation my DA pull was over my gauge's 8 lb. max and SA was just under 5 ib.s. I polished the snot out of everything, including the inside of the frame. After installing everything provided by Mcarbo, the DA is still over 8 lb.s (but smooth because of all the polishing!) and SA dropped to
4 1/4 lb.s. Needless to say, I was disappointed.

I must be a glutton for punishment because I've been looking at their Mini 14 sear spring, mainly because I haven't seen anything else out there for it.