枪托

The stock is a critical structural component of a tactical semi-automatic rifle that houses the receiver and barrel assembly, provides a stable platform for the shooter's shoulder and cheek, and often incorporates ergonomic features for improved handling. It serves as the primary interface between the shooter and the firearm, transmitting recoil forces to the body while maintaining sight alignment and control during rapid firing sequences.

The stock functions as a mechanical interface that transfers firing forces from the firearm to the shooter's body while maintaining stability and alignment. It provides leverage for aiming control, absorbs recoil energy through material deformation and design geometry, and positions the shooter's eye relative to the sights or optics. Modern tactical stocks often incorporate adjustable features to accommodate different body sizes, shooting positions, and equipment configurations.