The ZCI 433mm 6.02mm stainless steel inner barrel is a direct upgrade path for airsoft AEG shooters aiming to refine accuracy and boost chronograph numbers. Built from quality stainless steel, this tight-bore barrel tightens grouping potential and increases FPS through superior air-seal efficiency – ideal for skirmishers and target shooters who demand precision.
Key Features
- Stainless steel construction – durable, corrosion-resistant tight bore
- 6.02mm precision calibre – tighter tolerances than stock barrels
- 433mm length – fits standard Marui-compatible AEG bodies
- Enhanced grouping potential – improved shot consistency at range
- FPS increase – optimised air-seal efficiency for higher velocity
- Drop-in upgrade – compatible with all Marui-spec gearboxes
Real-World Use Cases
Whether you’re a target shooter chasing tighter groupings or a skirmisher seeking competitive edge, this barrel delivers. Pair it with a quality hop-up rubber and a reliable motor, and you’ll notice immediate improvements in shot placement. Common in upgraded support-role rifles and DMR builds.
Technical Specifications
- Inner calibre: 6.02mm
- Length: 433mm
- Material: Stainless steel
- Bore type: Tight bore
- Compatibility: Marui-compatible AEG
Compatibility & Upgrades
This barrel fits all standard Marui-compatible AEG platforms (Tokyo Marui, Cybergun Colt, CYMA, Specna Arms, etc.). Pair with a 50° or 60° hop-up rubber and quality shimmed motor for best results. Works seamlessly in full-metal gearbox builds. Verify your AEG’s inner barrel length before ordering.
UK Legal & Site Notes
This is a cosmetic/internal upgrade component with no legal implications in the UK. Most airsoft sites welcome precision upgrades; always check your local venue’s FPS limits before deploying an upgraded build. Chronograph testing recommended post-install.
Upgrade your AEG’s accuracy today with ZCI’s proven barrel engineering.



