m4a1

HD1080pHD

m4a1 custom vs m4a1 custom crystal
Whats better lot of people saz custom crystal is better.
but i still dont know why.
i want to explain what is diffrent.

godmorgen

Cant see the difference... I like advanced bettet, cuz I'm bad with a scope, but when u have it, it's really temting to use.

The chrystal off course have some more prestige because u really need to pull yourself together to get all those ribbons.