PDI 01 6.01mm Precision Inner Barrel for Marui HK45 GBB (100mm)

PDI 01 6.01mm Precision Inner Barrel for Marui HK45 GBB (100mm) Internal diameter 6.01mm built for precision shooting Genuine Products by PDI Stainless Steel Tightbore Upgrade Barrel Advance Technology forming by Cold Forging on Stainless Steel result in tolerance no more than Suitable For Tokyo Marui HK45 Series Airsoft Gas Blow Back GBB Rifle