1917 edition of Arms And The Man, writing “The arm in its present state is entirely practical, strong, and fool-proof.” The Remington-Rioseco Periscope Rifle, equipped with the M1917 Sight ...

About a year ago I found this 16 mm film footage showing a World War I-era demonstration of a Lewis gun mount that includes a unique periscope sight. I knew what I was looking at in general terms ...