ZCI Stainless Steel 6.02mm Inner Barrel 455mm

The ZCI Stainless Steel 6.02mm Inner Barrel is a straightforward, cost-effective upgrade designed to improve accuracy and FPS across most Marui-compatible airsoft rifles. Precision engineering and quality materials make this a popular choice among players seeking measurable performance gains.

Key Features

• Tightbore design – reduced air gaps for tighter grouping and improved accuracy
• Stainless steel construction – corrosion-resistant and durable for long-term reliability
• 6.02mm bore – compatible with standard 0.20g airsoft BBs; ideal sweet spot between tight tolerance and feed reliability
• 455mm length – suits mid-length rifle builds and M4 variants
• FPS increase – elevated velocity due to optimised air channelling
• Marui compatibility – designed to fit most Marui-spec AEG gearboxes and platforms

Real-World Use Cases

Skirmishers looking to improve accuracy without a full overhaul will benefit from this barrel upgrade. Milsim players can pair it with a quality hop-up rubber and nub to achieve consistent mid-to-long-range performance. Target shooters will appreciate the precision bore and repeatable grouping. It’s equally at home in a DMR-style build or a standard assault rifle.

Technical Specifications

• Inner bore: 6.02mm (tightbore)
• Length: 455mm
• Material: Stainless steel
• Finish: Polished stainless
• Compatibility: Marui-compatible AEG platforms

Compatibility & Upgrades

This barrel is designed for Marui V2 and V3 gearbox systems and AEGs using standard M4/M16-pattern upper receivers. Pair with a quality hop-up rubber, precision nub, and stable air-seal system for best results. Installation requires basic airsoft tech skills – no proprietary tools needed.

UK Legal & Site Notes

As a replacement inner barrel, this component is not subject to UK airsoft retailer restrictions. Two-tone requirements apply to the finished rifle. Always check your local skirmish site’s FPS chronograph limits before upgrading – increased velocity may exceed limits on some sites.

Ready to refine your rifle’s accuracy? Grab the ZCI 6.02mm Inner Barrel from Airsoftdirect UK today and experience tighter grouping and improved consistency in your next game.