The Maginot Line - A misunderstood history

JM Reibel
or MAC Mle 1931

Twin light machine gun (7,5mm)
Explanation
1) Azimuth indicator 2) Level indicator
3) Scope 4) MAC Mle 1931
5) Magazine 6) Shoulder rest
7) Elevation/declination 8) Spent case selector
9) Movable embrasure mounting

coupole