Years ago I attempted to do a perfect cut out in the foam for a camera case . I figured that since I am a surgeon and I was using a sharp scalpel it would be no big deal. Well , it was a big deal and the result was a big disappointment , cosmetically , but it did function . Nothing equals a Pelican case for protection , but I knew that I would not be satisfied with the system if the foam did not look as professional as the M4 and the Pelican case. Then , I discovered Cobra . I thought that this is too good to be true. Well, I can testify that the final result is what they say it is . The foam is "sculptured" beautifully for my M4 , making a perfectionist like me very happy.