The useful way to understand the AK family is to separate three questions: which design generation is being discussed, how its receiver was made, and which national or commercial designation appears on the specimen.
A pattern, not a single object
“AK-47” is often used as a broad label, but the historical family contains several distinct design generations. The early AK is associated with a milled receiver in its mature production form. The later AKM brought a revised stamped receiver and became the basis for a very large share of the rifles, parts and visual cues people now associate with the pattern. The AK-74 retained the general mechanical arrangement while moving to the 5.45×39mm cartridge and introducing its own set of component standards.
National production added another layer. China used the Type 56 designation; Finland developed the Rk 62 lineage; Yugoslav and later Serbian rifles used M-series names; and numerous export or import labels appeared in the United States. Similar silhouettes can therefore hide meaningful differences in receiver form, trunnions, furniture attachment, sight details and chambering. The major variants overview provides a map without turning those differences into rankings.
Read the construction first
The receiver is the clearest starting point. A milled receiver is machined from a substantial steel blank and presents broad, solid side walls with characteristic lightening cuts. A stamped receiver begins as sheet steel formed into a shell and joined to separate front and rear structural blocks. Rivet patterns and sheet-metal contours make that construction visible from the outside.
Nominal wall thickness is one engineering variable, not a complete judgment of a rifle. The common Warsaw Pact AKM pattern uses approximately 1mm sheet, while a number of Chinese, Yugoslav, Finnish and related stamped patterns use approximately 1.5mm sheet. Thicker material increases section stiffness, while geometry, heat treatment and the surrounding structure remain part of the whole design. The receiver guide explains the distinction in descriptive terms.
Use names as clues
Designations are evidence, but not always a complete specification. AK, AKM and AK-74 indicate design lineages. Type 56, RPK and national M-series labels point to particular branches or roles. U.S. market names such as MAK-90, SAR, WASR, SLR, SA, MISR, WUM and Romak were shaped by origin, importer nomenclature and changing import rules. A name may narrow the possibilities, yet receiver markings, construction and chambering still need to agree.
This reference treats those labels historically. It does not compare current products, recommend a manufacturer, or provide purchasing advice. For readers who want a museum context, the Royal Armouries collection provides a searchable institutional catalogue of arms, armour and related records.
What the reference covers
History and variants
How the 1947 AK, the 1959 AKM and the 1974 AK-74 relate, and how national patterns developed around them.
Receivers and parts
How stamped and milled structures differ, plus a component-level description of the long-stroke gas system.
Magazines, furniture and optics
The material families and external interfaces that help identify a configuration without judging its quality.
Ergonomics and protection
How stock geometry, carried weight, sound and repetition affect comfort during a long range session.
Scope and independence
This site is an independent informational reference about AK-pattern rifles. It is not affiliated with, endorsed by, or connected to Kalashnikov Concern, Kalashnikov USA, Century Arms, Norinco or any firearms manufacturer, importer or dealer. Nothing on this site is for sale, and no firearms, parts, ammunition or accessories are offered, sold or shipped.
The material is intentionally historical and descriptive. It does not provide instructions for building, converting, modifying, repairing or assembling a firearm. It also avoids current availability and manufacturer verdicts. Readers should use primary museum, standards and government resources when a question turns on a formal classification or current rule.