KFK Sniper Chamber Parts Standard (SCP-S)

Ultra-high precision original SCP. (Machined from stainless steel)
It has remained in storage since purchase.

Although not publicly distributed, it is a long-selling product that has been loved by enthusiasts for 10 years.
By simply sandwiching it between the hop rubber's O-ring and the chamber packing, you can expect improved accuracy and range. It can be easily installed with chamber replacement skills. (Perfect for your first tune-up and a satisfying product.)
It applies even and high HOP friction to the BB弾, stabilizing the trajectory.
It effectively utilizes the elasticity of the O-ring, making it very resistant to jamming and less prone to developing quirks, allowing for worry-free use.
(It can usually be installed on Chinese electric guns, but as it is manufactured based on Marui products, some processing may be required.)