I used pieces of rock that I have lying around instead of frag plugs. Wanted to wait and see if I could frag without killing before I spent money on it :)
Nice work Bio.Now just let em grow out some,and trade em.
I actually perfer my frags to be mounted to rubble rocks over the plugs.With the plugs,you've got to have holes to set them in.When ther on rubble,its a lot easier to find a place to set them.