ZCI 6.02mm Stainless Steel Inner Barrel 294mm

The ZCI 6.02mm Stainless Steel Inner Barrel is a precision tightbore upgrade designed to optimise your AEG’s performance. Whether you’re upgrading a stock rifle or fine-tuning a competition build, this barrel replaces worn or loose factory barrels to unlock tighter groupings and more consistent accuracy downrange.

Key Features

• Stainless steel construction – durable, corrosion-resistant tightbore
• 6.02mm precision bore – tighter than standard 6.03mm for reduced BB wobble
• 294mm length – suits most M4, M16, and AR-pattern AEGs
• Improved velocity – optimised air seal for increased FPS output
• Enhanced accuracy – tighter BB engagement for superior grouping
• Marui-compatible – direct fit for Tokyo Marui and Marui clones

Real-World Use Cases

This barrel excels in target shooting, where precision matters—tight groupings at 20–30m are noticeably improved with a quality tightbore. CQB and skirmish players benefit from the velocity boost and consistency, especially in cold weather. Milsim participants upgrading older AEGs will appreciate the durability of stainless steel and the reliability gains over worn stock barrels.

Technical Specifications

• Inner Diameter: 6.02mm
• Length: 294mm
• Material: Stainless steel
• Bore Type: Tightbore (precision)
• Compatibility: Marui-compatible AEGs (M4, M16, AR-pattern)

Compatibility & Upgrades

The ZCI 6.02mm barrel is a drop-in replacement for most Tokyo Marui AEGs and clones. Pair it with a quality hop-up rubber, precision BB, and clean nub for maximum effect. Works with GBB pistols fitted with Marui-spec barrels; always measure your current barrel length before ordering to ensure fit.

UK Legal & Site Notes

Inner barrels are unrestricted airsoft components and are legal to own and transport in the UK. Check your skirmish site’s chrono rules—upgraded barrels may increase FPS; most UK sites cap AEGs at 350 FPS with 0.20g BB. Test and adjust your hop-up after installation.

Ready to sharpen your shot grouping? The ZCI 6.02mm Stainless Steel Inner Barrel is an affordable, proven upgrade for any Marui-compatible AEG. Order now and feel the difference in accuracy and consistency.