Stock mag grip frame is made out of?

[backtrack2pb]

I know that the mag grip frame is carbon of some sort, it looks fiberous but by no means is it an actual weave, and it has markings that make it look like injection molded plastic. What is the mag grip frame made out of? How do you inject (if that's how it's done) carbon into a mold?

[LawFox32]

its carbon fiber; I assume it becomes plyable with heat so that it can be molded or injected

[Russ]

It's a polymer (plastic) with carbon fibers added to the matrix.