Which description best summarizes the AK-74's combination of cartridge, magazine and locking system?

Which description best summarizes the AK-74's combination of cartridge, magazine and locking system?

• A. Cartridge 5.45x39mm; Magazine 30 rounds plastic; Locking: Rotating bolt
• B. Cartridge 7.62x39mm; Magazine 20 rounds steel; Locking: Tilting bolt
• C. Cartridge 5.56x45mm; Magazine 40 rounds aluminum; Locking: Sliding bolt
• D. Cartridge 5.45x39mm; Magazine 50 rounds drum; Locking: Bolt-action

Answer: (A)

The main idea here is matching the AK-74’s standard specifications: it is chambered for the 5.45x39mm cartridge, uses a detachable magazine with a typical mid-size capacity, and employs a locking system consistent with this family of rifles. The 5.45x39mm round was chosen for lighter recoil and higher controllability, which is a hallmark reason the AK-74 replaced the larger 7.62x39 in many roles. A 30-round magazine is the standard capacity for this system, and polymer magazines of that size are common because they reduce weight and resist corrosion while feeding reliably. The locking mechanism described—rotating bolt—fits the type of locking arrangement associated with this design family, providing a secure lock during firing and reliable cycling as the gas system operates. Other options mix calibers, magazine capacities, materials, or locking styles that don’t align with the AK-74. For example, the 7.62x39mm cartridge is characteristic of the earlier AK-47/AKM lineage; the 5.56x45mm chambering and larger aluminum magazine fit a different platform; and drum magazines or bolt-action locking don’t describe the AK-74’s typical configuration.

The main idea here is matching the AK-74’s standard specifications: it is chambered for the 5.45x39mm cartridge, uses a detachable magazine with a typical mid-size capacity, and employs a locking system consistent with this family of rifles. The 5.45x39mm round was chosen for lighter recoil and higher controllability, which is a hallmark reason the AK-74 replaced the larger 7.62x39 in many roles. A 30-round magazine is the standard capacity for this system, and polymer magazines of that size are common because they reduce weight and resist corrosion while feeding reliably. The locking mechanism described—rotating bolt—fits the type of locking arrangement associated with this design family, providing a secure lock during firing and reliable cycling as the gas system operates.

Other options mix calibers, magazine capacities, materials, or locking styles that don’t align with the AK-74. For example, the 7.62x39mm cartridge is characteristic of the earlier AK-47/AKM lineage; the 5.56x45mm chambering and larger aluminum magazine fit a different platform; and drum magazines or bolt-action locking don’t describe the AK-74’s typical configuration.