Unicorn Airsoft
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Unicorn Airsoft's 370mm 6.03mm Ultimate Precision Inner Barrel is a direct-fit replacement for most standard AEG rifles. It's stainless steel with a Nitrolon coating, which resists corrosion and keeps the bore smooth for consistent BB travel. The 6.03mm tightbore diameter creates a tighter air seal than a standard 6.08mm barrel, which helps stabilize BB flight and improve shot-to-shot consistency.
This barrel length suits carbines and short-barrel builds — roughly 14.5 inches, so it fits CQB and compact AEGs. It won't fit full-length rifles like the M16 or longer M4 carbines. The inner barrel replaces the stock one inside your handguard; you'll need to check that your handguard can accommodate 370mm of barrel length before buying. The package includes only the inner barrel — no hop-up unit, bucking, or nozzle.