Upgrading the SP01 incrementally with measurements

[bigmatt17073]

When I bought my Sp01 (safety model) back in October my plan was to give the shooting sports a try. I wanted to make it into a competition gun that was legal for IPDA SSP/ESP and USPSA Production so everything I have done was geared toward being legal.

The gun had about 500 rounds through it before I took it apart. I originally wanted to smooth the action and install all the upgrade parts at the same time, but I got bored and was poor. So I tore into it previously,  and smoothed the action before I ever ordered the parts so the base line numbers are on a slightly used gun with a smoothed action following the instructions on this forum.

Parts added:
CZC Comp hammer
CGW SRS-2
11lb recoil spring
CGW type 2 disconnector
CGW adjustable sear
CGW reduced power trigger return spring
CGW Floating trigger pin
CGW EZ-Drift sights

I installed the mods in parts and took DA and SA measurements after most of them to see how much each mod actually effect the trigger pulls. All measurements were taken with a Lyman digital gauge and the average of at least 5 trigger pulls with most of them the average of 10.

Base line:
DA 11 lbs 5.5 oz. SA 5 lbs 7 oz.

Installed 11lb recoil and Blue 13 lbs hammer spring:
DA 9 lbs 4.5oz SA 5 lbs 2.5 oz.

SRS kit (Extended firing pin, fp spring, fpb spring, FP retaining pin)
DA: Oops I forgot SA 4 lbs 9.5 oz

CGW Disco and CZC Comp hammer installed
DA 8 lbs 8 oz. SA 4 lbs 7 oz.

Adjustable sear plus the firing pin block lifter and spring from the SRS kit (I only took the sear cage apart once):
DA 8 lbs 3.5 oz. SA 4 lbs 4 oz.

11lb Black hammer spring instead of the 13 lbs:
DA 6 lbs 9 oz. SA 3 lbs 11 oz.

Everything above with the Reduce power trigger spring:
DA 6 lbs 4 oz. SA 3 lbs 1 oz.

EDIT: Trigger pull weights a year later are now DA 5 lbs 9 ounces and SA 2 lbs 13 ounces. The past year included a full summer of IDPA, multiple range sessions in-between, and a very recently 85 C trigger install.

EDIT #2: The CGW Type 2 disconnector was replaced by a hand fitted Type 1 for the shortest SA reset possible. The Type 2 ended up in my Israeli Surplus Compact D.

I put 200 rounds through it the other day before I put the CGW trigger spring in. When I cleaned it from that range trip I put in the spring and took the measurements again. All 200 rounds were flawless. Well actually 199 since I was using some reloads and one was a complete dud, but that wasn't the guns fault.

Overall impressions of the swap were great. Each one on its own made a nice improvement in the DA/SA trigger of the gun. The Comp hammer and the disco didn't change the numbers a lot, but the smoothness and feel of the trigger in both DA and SA was huge. I hear many people talk about how tough it is to get the pins in/out of the hammer/sear/hammer strut, and I had the CGW Starter punch and some new pins and it was cake. The biggest PITA of the whole install was actually the sights. The rear would not budge and eventually had to be clamped into a vise and use a bigger brass punch to remove the stock night sight.

And since every thread is better with pictures ...here the SP01:

[oldtimer48]

nice looking gun, is the rear sight the fixed model he advertises to help those over 40 and how do you like them. The reason I ask is that is next on the list for me is having the fiber optic front and either the adjustable competition rear sight or the one CGW sells that help those of us that are over 40.

[scbwic]

wow really appreciate the time you took to do this. Very helpful information

[bigmatt17073]

nice looking gun, is the rear sight the fixed model he advertises to help those over 40 and how do you like them. The reason I ask is that is next on the list for me is having the fiber optic front and either the adjustable competition rear sight or the one CGW sells that help those of us that are over 40.

I have a few years to go until I hit 40, but yes these are the same sights. The CGW part number for the set is E-Z/D-9/40. They are a huge improvement over the stock Mepro-Lite night sights the SP01 comes with stock. I like the fiber front/black serrated "competition" type sights over most sights. They are easy to pick and much faster to me to shoot accurately than night sights. Night sights do have a place, but not on a range/competition gun in my eyes. My carry gun is a Glock 19 that has Trijicon HD night sights, but I have a set of similar Warren Tactical fiber optic/black sights on a my Glock 17.  The transition from the SP01 with the new sights was easy because I am use the same style of sight. My G17 is the handgun I have owned the longest and shot the most, but with the new improvements to the CZ might be spending long periods of time in the safe.

I see a future "problem" of multiple CZ pistols down the road or maybe a CZ clone with some CGW parts (Canik Stingray maybe?).

[oldtimer48]

Thanks BigMatt for answer a question I have been pondering

[Isopropyl]

Did you do the sights yourself? If so, how hard was it to push out the rear? I want to get the same sights, but I'm not sure if I'm going to need a smith to do them or not.

[reshp1]

Did you do the sights yourself? If so, how hard was it to push out the rear? I want to get the same sights, but I'm not sure if I'm going to need a smith to do them or not.

On my 75B Stainless, the factory sight had a small stake mark in the middle that took a healthy whack to break free, but after that, it drifted pretty easily. If you have a vise or way to clamp to a sturdy workbench, it shouldn't be too bad. The other consideration is if you are going with night sights.. those are supposed to be pressed in, not tapped, or you risk breaking the tritium vials.

[Isopropyl]

Ive got the same sights as the OP. The Tru Dots. Trying to put the EZ Drifts in.

[bigmatt17073]

I had to use a vise to remove the rear sight. I clamped the slide in a vise with multiple pieces of bicycle tubes around the slide so it didn't mar the finish on the slide. I used a brass punch and once I got the rear slide moving it came out easily. The front removal and both front/rear installs were done without the use of the vise.

[bmo]

Thanks for all the measurements. Just got an SP-01 myself and actually have the majority of those same CGW parts on order already. I'm keeping the stock hammer and sear for now (need more mags first before a better trigger pull) and once I get the CGW parts I'm going to clean up and burrs and polish per the great guides here.

I had a question though, the CGW front sight is already machined for the roll pin correct? Does it also come with a new roll pin for install? The picture and description on the CGW site don't mention this. I was going to email them but thought I'd ask you just in case.

Thanks. Great looking gun btw

[el capitan]

For my 75 B I had ordered a roll pin together with my CZ fibre optic front sight. The spare pin is still waiting to be used - the stock part came out cleanly and could be reused.