Originally Posted by ACantarel
Check out this script to adjust all meshsmooth, turbosmooth and other modifiers in your scene in one go:
Modifier Zorb Tools
Meshsmooth and turbosmooth are basically the same. Meshsmooth has more control than the turbosmooth but is slower. Check the 3ds max manual for a detailed description.
It's up to you which gun you want to model
Did you check your units? Is all to correct scale? I strongly recommend you model to scale.
Check some basic tutorials showing how to apply ambient occlusion onto your renderings. It's an easy thing to do and depending on what you use; there are plenty of helping tutorials online and of course the manual
I still do not understand this scale.