This is a set of eight replacement Ho‑103 12.7mm aircraft machine‑gun barrels designed for 1/32 scale Japanese WW2 aircraft. These barrels feature a cleanly modeled perforated jacket with sharply defined vent holes, providing a level of detail that is difficult to achieve in injection‑molded kit parts due to tooling limitations. This version represents the plain barrel without the flash‑hider attachment. Only a few aircraft carried the Ho‑103 with the barrel exposed—most notably the Ki‑44 Shoki—so the intended use is limited to aircraft where the muzzle is visible. Each barrel is modeled longer than necessary so the user can trim the length to match the specific kit or installation style. The barrels are designed as direct replacements and can be installed with minimal or no modification depending on the kit. All parts were test‑printed to verify general fit, but small adjustments may still be necessary depending on printer differences and kit tolerances.