9 - 
7 SSS 
=SSSS=——SSE=. 
a all 
Converted M.L, Punt-Gun to B.L. 
(Longitudinal section) 
ES 
QUT 
== —-——\ 
ONE INCH 
{ 
Cross section of Breech—Line a. B, Converted M.L. Punt-Gun to B.L. 
