If your state allows it you can mill it out and finish it. That is not an 80 percent. It's just the casting. Some people prefer them if they have the milling tools. An 80 percent needs a drilling jig and something to cut the threads for a buffer tube. ATF says an 80 percent is legal and to build one is legal.
Check in the build it yourself forum for more.
I'm drooling over a semi-auto sten ...
Originally Posted By wiguy:
is this something that has to go to a FFL
would you have to serial # it ?