Firearm Fastening Assembly with Interlocking Inserts

The fastening system is divided into multiple inserts positioned at different locations (front, rear, and sides) of the stock, each independently securing the receiver and barrel. This segmentation allows each insert to bear specific loads and prevents movement from any single point of failure, significantly improving stability without requiring a single complex mechanism

The inserts are positioned within recesses in the stock, creating a nested structure where the insert fits into the stock's recess, and the receiver and barrel are secured against the insert. This nested arrangement provides stable attachment while keeping the overall structure compact and integrated

Each insert is provided with specific local features including recesses, cam surfaces, and inclined surfaces tailored to its position in the stock. These localized geometric features ensure precise alignment and positioning of the receiver and barrel at each attachment point, achieving high manufacturing precision through distributed specialized features rather than a single complex precision component

The inserts are positioned asymmetrically at different locations around the stock (front, rear, sides) with different orientations and configurations. This asymmetric distribution of attachment points provides superior alignment control and prevents rotational or lateral movement of the receiver and barrel, enhancing precision while using simple individual insert components

The inserts incorporate cam surfaces and inclined surfaces that provide dynamic locking action during assembly. As the receiver and barrel are inserted, the cam surfaces automatically engage and lock the components in place, providing strong attachment without requiring manual threading or tightening operations, thus maintaining ease of operation

The inserts are designed to self-align and self-lock during assembly through their geometric features including cam surfaces and inclined surfaces. The system automatically secures the receiver and barrel in the correct position without requiring external alignment tools or complex fastening operations, enabling strong attachment with simple assembly

Instead of relying on a single compression plate, the system uses multiple inserts distributed at different locations (front, rear, and sides) of the stock. Each insert independently restrains movement in specific directions, collectively providing comprehensive stability against recoil forces from all directions, preventing the instability that occurs with single-point compression

The inserts incorporate cam surfaces and inclined surfaces that change the mechanical parameters of the attachment during recoil. These surfaces convert recoil forces into locking actions that increase friction and normal force at the attachment interface, dynamically enhancing the stability parameter rather than relying on static compression alone