How to destroy an AR-15
by David Pescovitz from Boing Boing on (#3NFEH)

" Each cut must completely sever the receiver in the area indicated by the diagonal lines.
" The receiver must be completely severed in each area indicated with a diagonal torch cut.
" Cutting by means of a band saw or cut-off wheel does not ensure destruction.
"Machinegun Destruction" (via Rolling Stone)