The 
LCT LCK104 Front Sight Block with Flash Hider
 (SKU/MPN: PK-15 or PK015) is a steel replacement or upgrade component designed for the LCK104 (AK104) airsoft rifle. It is an integrated unit featuring the front post sight and the characteristic large-diameter muzzle device. 
 
Product Specifications & Details
Material: Durable CNC-machined steel for realistic weight and finish.
Compatibility: Specifically designed for the LCT LCK104 (AK104) platform.
Threading: The flash hider uses 24mm CW (Clockwise) threading.
Components: Includes both the front sight block assembly and the specific 104-style flash hider.