The GFM cloche was one of the most common defensive armaments on the Maginot Line. A cloche (bell) was a fixed and non-retractable firing position made of a thick iron casting which shielded its occupant. By comparison, turrets could be rotated and sometimes lowered so that only the top shell was exposed. * Light machine guns or automatic rifles * Vision blocks * Mounted binoculars * A periscope (located on the top of the bell) * A 50 mm. mortar