There are a lot of flaws that you don't see in the final image. I tried animating and messed up and never figured out how to get rid of the dang keyframes. Now the whole animation is all wobbly from me trying to fix it:( just try to fix the keyframe problem cuz I never could. the back isn't modelled accurately. The rough plasic material you will se is by Sebastian Zapata
This is a great reference for modelling the grip!
To delete an object's keyframe on the frame selected in the Timeline, press Alt + I in the 3D View. Alternatively, you can use the Dope Sheet or the Graph Editor to select keys on any frame, using Delete instead of Alt+I to delete them.