Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. weapon components
7. projectile weapon components
8. firearm components
9. stocks (firearm components)

Anotations

Scope note:

Firearm accessories that replace the stock on a semi-automatic firearm. The recoil from the weapon in addition to a springing mechanism to generates motion that allows the rifle to bump the trigger against a shooter's finger, enabling rapid firing without the shooter continuously pulling the trigger.