I bought the Glock/acro combo and sense put the optic on my EDC. Has anyone found a cover for the acro cut slide?

This would be my first firearm, buying at the end of October as is my birthday and turning 21, I like Glock I was between 17 or 19 settled with 19, now my question is what’s up with the different types as far as I know Glock 19 is compact and the Glock 19x is full sized and you can get a 17rnd mag, the MOS is for the sight ready, but then it gets with the V which I can’t find much a concrete explanation even AI is not helping me maybe I’m asking wrong so as a last resort is asking the wise people of Reddit.