[SPARK] Chamber Standard Electric M4 Hop-Up Arm Set of 2

A drum-type chamber with a barrel coaxial dial that prevents HOP adjustment from going out of sync.
The HOP window is also designed to be large, so you can use the push rubber from the "SPARK Cat Stroking HOP/Cat Punch HOP" as is!

A versatile resin chamber set that is resistant to damage to the magazine lip.
This is a great value set that also includes a chamber clip, barrel ring, push-in rubber, and gasket.

Compared to previous models, the hop arm has less rattle, contributing to stabilizing the hop.

A hole has been drilled at the top of the ammunition feed port to prevent double feeding.

It also comes with two types of HOP arms with different pushing amounts.
The HOP arm with the horizontal line mark has the push rubber holding part set back slightly towards the radio box, so you can use it according to the gasket and push rubber you use.

[Notes]

The item may have been opened for inspection.
Processing may be required for installation.
As this product is made overseas, there may be minor scratches.