ohland
08-19-2015, 04:38 PM
https://books.google.com/books?id=CJ1GAQAAIAAJ&pg=PA458&dq=auxiliary+rifle+barrel&hl=en&sa=X&ved=0CBwQ6AEwADgyahUKEwicm-uL_bXHAhVPQZIKHecRDG4#v=onepage&q=auxiliary%20rifle%20barrel&f=false
Machinery, May 1906, pages 457-460
Machinery, May 1906, pages 457-460