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Slide is M3x0.5 on the Shadow 2 OR model. 6mm is too short, I think 8mm is probably perfect. Optic plate from CZ is 6-32. May vary with other plates.

Any modifications to the trigger?

You will need the long 1911 hex screws and you need to take off a little bit of material. I suggest a bench grinder and not the shady stuff I did with an angle grinder.

You can see my findings a few pages ago. I use henning extensions and Lok "grid lok" magwell for a Tac Sport. They work fine together. The factory DWX baseplates do not play nice with that specific mag well. I used factory P10 basepads and ground them down to get them to work with the mag well.

How was th finish on the sear/hammer engagement? Did it need much clean up?

Can confirm m3x0.5 countersunk screws. 6mm long seemed short, I'd aim for 8mm long.

Bringing in the trigger conversation from the ts2 vs dwx thread: What are the best options for reducing trigger pull weight? One user suggested the egw ignition kit. Has anyone done a hone/polish job without modifying any geometry with good results?

Long story short, I have used these factory mags with factory grips and it's fine. Did not function with the mag well. Came home and was able to recreate the issue with blanks. (Peels first round starting from open slide, doesn't load anything else) Proceeded to use a factory p10 basepad(which looks dimensionally identical to the dwx basepad) and modify it to cut off the rounded nose and add a generous chamfer on the top. Could no longer recreate the problem and every round loaded fine. I'll confirm at the range when I get a chance.

Fun little discovery mid stage today - the factory DWX basepads (and the P10 base pads) dont seat reliably in the TSO mag well on the DWX. It might peel off the first round, but the rest won't feed.

Contemplating a more "factory" type option for a trigger job on my DWX. Which kit did you use? https://www.egwguns.com/1911-parts/ignition-parts/ignition-kits/

Check out my post on reddit for some details: https://old.reddit.com/r/CZFirearms/comments/13cxbw1/details_on_replacing_dwx_grips/ Long story short, 1911 grip screws 0.150-50 TPI. https://lokgrips.com/accessories/1911-hex-screws-black/