PDI Airsoft Inner Barrel (6.01mm SUS304 Precision Tightbore Barrel)-101mm for Tokyo Marui FN 5-7 GBB

What you need is the PDI 6.01 Precision Inner Barrel for your Tokyo Marui FN 5-7. Made from Cold Rolled Stainless Steel (SUS304), this PDI 01 precision inner barrel is what you need to dramatically increase your Tokyo Marui FN 5-7s accuracy.