The AM cloche Mle 1934 was used on the new fortifications built to extend the Maginot Line into the Sarre and the Extension past Longuyon. It came in a large and small size and included two embrasures similar to the cone-shaped ones in a Type B GFM. The embrasures were only a short distance apart so that together they gave 90° of coverage. Like the JM Cloche, the AM was embedded as much as possible in concrete protection. The AM cloche included a 25-mm gun sandwiched between a JM. The gunners could shift this set of weapons from one crenel to the other. In the ceiling, there was a periscope for observation. In the few JM cloches that were converted into AM cloches, the embrasure was replaced with Type B GFM embrasures. A set of JM with a 25-mm gun and a periscope-type L-2 or L-3 (1.25 x magnification) were installed inside. This type of cloche was distinguished by its single firing embrasure.
The stationary turrets of Maginot Line can be raised or lowered using arrow keys. Note that the exposed armour of raised turret is very thin.