Is the software for the AR 10 Lower available? Is it compatible with the Da Vinci 1? What is the best material to use for the lower? ABS? PLA?

Most of my questions stem from this article I read, but id really like to get in contact with like minded people who know more on the subject since im new to 3D printing.

Johnny Dylanger- johnnydylanger6@gmail.com

http://3dprint.com/54163/printedfirearm-ar10-piece/