slide difference between SP-01 Tac and Phantom

[viking499]

Certainly one could choose to file on the frame and fit it that way. I think the outcome may be cleaner having it milled off the slide instead.

It would definitely be more expensive.  10 minutes and good file and the problem should be solved.  Never see it on the frame and no need to refinish anything.

I'll take your ten minutes and up you by 4 hours. And I'm still not 100% done with the fitting.

Maybe you just needed a sharper file.

So, what all did you have to do to get it to fit?  Was it more than just the square corners inside the frame?

[maleante]

So, what all did you have to do to get it to fit?  Was it more than just the square corners inside the frame?

In the second picture below you see the phantom slide, upside down, muzzle on the left. Starting at the red circle and continuing down the slide is a rounded radius. Instead of being at a pleasant 90° angle, it is like a 90 with a rounded corner.

As the CZ 75 frames have a nice sharp 90° edge (see picture 3 red line), the slide will not enter the frame rails starting at the slide tunnel. The rounded radius interferes, this is seen in picture 1. You'll also notice a lack of rear sight...

Option 1. Mill the rounded radius off the slide. I don't have access nor knowledge to do that. Of course both CZC and CGW were willing to do the work. Refinishing the slide would also have to happen.

Option 2. Break the edge of the frame rail with a file. Giving the frame rail edge a nice chamfer seems like the best idea given my lack of machinery and that the work is hidden inside the frame. Not entirely necessary to refinish the frame. This is the method I chose.

Now let's look at picture 3. The red line on the right is the total length of the frame rail edge that needs to be chamfered to match the round corner of the slide. Using some files I broke both edges and tested the fit until the slide would return completely rearward. The slide tunnel would clear the frame, however the fit was exceptionally poor. The slide tunnel is too wide conpared to the interior width of the frame... It wouldn't slide freely. In picture 3, the yellow area bordered by the red edge all had to be reduced on both sides of the frame.

You'll notice that the slide finish in picture 2 shows some light scuffing denoted by the yellow arrows. I'm not too worried about that, but the circled area was wearing down the polycoat enough to demand more attention after test firing.

I did all fitting by hand and used Super Blue to protect the metal. After reducing the right side of the frame to mitigate the rubbing, I'll reapply the cold blue and do a couple more coats. The pictures don't do it justice, it turns out black.

FWIW, all my polishing of the internal parts will get the Super Blue treatment in the next couple weeks.

TL;DR what was initially thought to be quick and easy did not turn out that way. The slide is smooth, but it took many hours to get there...

[maleante]

Here's the sort of final product. I'm waiting on gold Armanov Spyder 3D grips and a gold CZ UB target SA trigger. That'll match up nicely with the CZ UB gold aluminum baseplates.

Parts list: SA frame, Phantom slide, narrow shadow hammer, shadow 2 trigger return spring, shadow 2 recoil spring, flat mag brake, RC tech reduced power firing pin spring, RC tech 11# recoil spring, firing pin block delete, shadow sear, SA wide ambi safety's, 85 combat ambi slide stops, CZ UB 1.5mm serrated FO front sight, CZ UB defender serrated rear sight, CZ UB SA target trigger, shadow metal guide rod, shadow mag release, and the best part ever - CGW floating trigger pin. All in a bit less than $775 USD - not including the grips.