Description

It is identified as the Allen Screw (M4x12) that secures the Barrel Housing assembly to the main body or receiver of the air rifle. Its function is crucial for maintaining the structural integrity and alignment of the barrel system, which directly impacts the rifle’s accuracy and performance.

Key Features:

Product: Allen Head Screw (M4x12)

Compatibility: Huben K1 Air Rifle (Part #71 in the Barrel & Magazine Diagram)

Function: Secures the Barrel Housing to the rifle’s main receiver for proper rigidity and alignment.