Who makes a good assault rifle case with lots of padding a clip pockets and where could I get one from
They're available virtually everywhere.
Blackhawk and Eagle probably have the best reputation and quality.
You can usually find both brands at on-line resellers and save 10-20% in the process.
These are soft cases, of course.
There are many no-name brands as well. Try Sportsman's Guide, Cheaper Than Dirt, etc.