ZCI 240mm Stainless Steel 6.02mm Inner Barrel – Precision Upgrade

The ZCI 240mm stainless steel inner barrel is a straightforward, effective upgrade for skirmishers seeking better accuracy without costly gearbox work. Tight-bore barrels like this one reduce air wastage and improve BB-to-barrel contact, resulting in more consistent velocity and tighter grouping downrange.

Key Features

• Stainless steel construction – corrosion-resistant and durable
• 6.02mm tight-bore precision – optimised for 0.20g BBs
• 240mm length – fits standard M4/M16-pattern Marui AEGs
• Easy installation – direct drop-in upgrade with minimal tools
• Improves grouping and accuracy – tighter tolerances mean more consistent shot placement

Real-World Use Cases

This barrel suits both casual skirmishers and competitive CQB players looking to improve accuracy without a full gearbox overhaul. Installation typically takes 10–15 minutes and requires only a screwdriver and Allen key. Pair it with a quality hop-up bucking and nub for maximum effect.

Technical Specifications

• Calibre: 6.02mm inner diameter
• Length: 240mm (247mm with thread)
• Material: Stainless steel
• Bore Type: Tight-bore
• Compatibility: Marui-spec AEGs (M4, M16, similar platforms)

Compatibility & Upgrades

Designed for Tokyo Marui-compatible AEGs and clones that accept standard Marui inner barrels. Works with all hop-up units and bucking types. Pairs well with aftermarket hop-up nubs, precision BBs (0.20g–0.25g), and quality lubricant for optimal performance.

UK Legal & Site Notes

As an internal component, this barrel is unrestricted in the UK. Check your local airsoft site’s rules on permitted energy levels; barrel upgrades can slightly increase FPS depending on your setup and air nozzle fit.

Choose ZCI for reliable, affordable barrel upgrades that deliver real accuracy gains. Order now to upgrade your Marui AEG.