With a P-07 SR, P-07, Kadet Kit, and a P-10C, you can choose between threaded or standard barrel, safety or decocker, 3-dot (soon to be fiber optic) or night sights, and use the same mags between hammer- and striker-fired. Seems pretty modular to me!
![Grin ;D](https://czfirearms.us/Smileys/default/grin.gif)
![](http://i.imgur.com/9l7wygtl.jpg)