da Vinci GUREN 1 6.03mm Carbon Steel Inner Barrel for Marui Model M&P9 / PX4 (90mm)

Guren is made of precise carbon steel & process the HV500 Coat for the surface. This plating reinforced a hardness of the surface 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. da Vinci GUREN 1 6.03mm Carbon Steel Inner Barrel for Marui Model M&P9 / PX4 (90mm) Metal Construction High grade precision barrel at 6.03mm diameter for extra power and precision shooting Suitable For Tokyo Marui M&P9/ PX4 Series GBB Gas Blow Back Pistol Airsoft Guns For custom upgrade user, you can choose a longer barrel Dia.: 6.03mm Outer Dia.: 8.55mm