Revolver Gun modelling in Blender

I was trying to understand about hard surface modelling, edge loops, face loops and redirecting edge or face flow or loop.

Even though I did understand above things, few days of modelling I tend to understand this is not a symmetrical thing which come to next issue as I was done all most all the modelling when I consider other side of the subject which doesn’t quite match with vertices and edges even I tried to match them then both sides got really messy.

It’s really hard to deal with such a situation, better study your subject carefully.