Guren 03-1 GBB Inner Barrel - 6.03mm - 90mm SP-TM-31 This monocular is used globally

This monocular is used globally in some of the most challenging environments

Your airsoft pistol may experience feeding issues due to low gas pressure

and nature photographers

The set includes:

※ The use of LayLax Prometheus inner barrels and hop-up buckings is recommended for optimal performance due to the pre-set fit dimensions

Guren 03-1 GBB Inner Barrel - 6.03mm - 90mm SP-TM-31 This monocular is used globallyGuren barrels are made of precise carbon steel & processed with HV500 coating. This plating reinforces the surface hardness. It is superior to stainless steel (from HV200 to 400). Hop window length : 5. 5mm Inner Diameter : 6. 03mm Outer Diameter : 8. 55mm