Interesting photo, never fired one of those but by all accounts a truly poor machine gun. Better than nothing I suppose, 1939/40 our Home Guard were drilling with garden forks and improvised pikes. My Dad was so pleased when he was issued with a US made P14 rifle, he still remembered it with fondness back in the 80's.
It is much harder to find the P14 than the M1917, here in the States.