03 Guren 1 – FSG Inner Barrel

Description

Guren is made of precise carbon steel & process  the HV500 Coat for the surface.
This plating reinforced a hardness of the sruface so achieve around HV500.
It’s better than stainless steel (from HV200 to 400)
It’ll be kept clean & beauty surface for long time.
Of course,it’s good for anti rust.

Guren 1 is simple design.
The muzzle end has crown cut.
Low cost barrel series but its potential is enough for upgrading.

Dia. : 6.03mm
Outer Dia. :  8.55mm