So noted. I am sorry to hear your brother is having such a hard time.
I figured culling info from the TFL wonks about an AR in 545 would be the best course before i plop down any money.
"...and which is worst of all, continual fear and danger of violent death, and the life of man, solitary, poor, nasty, brutish, and short."-Thomas Hobbes, Leviathan
...What he meant to add was, "unless, of course, all responsible citizens are armed to the teeth."