What is a key identifying feature of the AKM?

A key identifying feature of the AKM is its rolled or stamped steel receiver, which typically includes a dimple at the magazine well. This design choice is important as it differentiates the AKM from its predecessor, the original AK-47, which had a milled receiver. The use of rolled or stamped steel not only reduces the weight of the weapon but also simplifies the manufacturing process, making it easier to produce in large quantities. The dimple near the magazine well provides added durability and helps in proper magazine seating, enhancing the overall functionality of the firearm.

The other options present aspects that may be related to rifles, but they do not accurately reflect the specific identifying characteristic of the AKM. For instance, while many rifles have wooden components, the AKM is primarily recognized for its stamped receiver, making the presence of a wooden handguard less significant in this context. The mention of an adjustable gas block is also not characteristic of the AKM, as this feature is not standard on this model, which instead relies on a fixed gas system for its operation. The receiver construction, especially with the dimple feature, is what truly sets the AKM apart in the landscape of automatic rifles.