Unicorn Airsoft 6.03mm GBB Nitroflon Coated Brass Inner Barrel for GBB (450mm)

Unicorn Airsoft 6.03mm GBB Nitroflon Coated Brass Inner Barrel for GBB (450mm) Metal Construction (Nitroflon Coating ) High grade precision barrel at 6.03mm diameter for extra power and precision shooting Suitable For Gas Blow Back GBB Airsoft Guns For custom upgrade user, you can choose a longer barrel Length: 450mm