Pistol Texture Changes, Emissives & Final Shotgun UV and Base Texture

I updated the pistol paint detail and had to change the position of the chamber holes and the gun name decals because it was hidden. Based on the emissive Dan done to the pistol which is now working, I was able to add my updates into engine and create the emissive for the shotgun myself, the base colours and details are on the shotgun and need paint details added over the weekend:

Shotgun UV Progress

Here is the current progress for the shotgun UV, I encountered some issues with some of the geomatry which needs fixing in order to carry on, like the pistol we removed some of the hidden unnecessary faces:

Pistol Edit UV - UV Progress

Here is the current state of the pistol UV, still having a real hard time understanding the UV side of things, I looked at some tutorials but it was hard to translate the techniques to the shape of my UV layout, Dan helped me and showed me some basics, I completed the main body and chamber, a checker texture was used to identify any stretching: