3.5 years ago this board was full of folks saying they'd be damned if they'd fill out the registration form & send it in. You could be shooting a [b]$100[/b] receiver with high-cap magazines out your butt.
Do you have a telephone??? [b]Call the DOJ in SAC and ask.[/b]
I'm not an attorney, internet is not the best place to get legal advise...kinda' 'get what you pay for'. IF the FAB-10 magazine is not removable, it is not considered an 'assault' weapon under current PRK law.
Locating the mag release so it release the mag is NOT a trivial task; you'll need a bit more than your Dremel tool.[:K] Obviously, if you're so freaked about evolving from an armchair ranger when the shtf, testing the release when the shtf will be too late. The jbt's will be all over you.
Again, I'm not a lawyer, but removing most of the mag block could be construed as creating an evil aw. After you call the doj, find an attorney and put him on retainer.
Ask the same question on calguns.net & I'll give you sthe same answer.
-hanko