Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Attributes and Properties (hierarchy name)
4. [attributes and properties by specific type]
5. operational attributes
6. [operational attributes for firearms]
7. self-loading

Anotations

Scope note:

Use to describe automatic and semiautomatic firearms in which the pressure of the propellant gas is used to force the bolt to the rear, independently of the barrel, which does not move relative to the receiver.