Help with unflat bottom?

Hi all, I am new here so please forgive me if I am asking silly questions. Anyhow I am fairly new to 3d Modeling and have only taken the essentials course.
I am working on a rifle receiver and I have a question I was hoping I could get an answer with, actually two questions.

1)  In the feature shown here (the extruded cut that stops on the shelf  needs to be angled @ 2 degrees), currently I only know how to extract  cut straight down or a draft, the problem is it needs to have vertical walls down with a base that runs at 2 degrees, any help with that? Here is a picture of the model
[IMG]http://i724.photobucket.com/albums/ww245/spoolx/RECEIVER.jpg[/IMG]

2) Say I wanted to create a plane that is the same as say the  front axis but is angled @ a certain angle, how do I do that? If I  input an angle it rotates it, and I am basically looking for a ramp.

Sorry if the questions are confusing but any help is appreciated.

Thank you!

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