ZCI 6.02mm Stainless Steel Inner Barrel – 113mm GBB Upgrade

The ZCI 6.02mm stainless steel inner barrel is a proven upgrade for gas blowback pistol owners seeking measurable gains in accuracy and velocity. At 113mm length, this tightbore barrel reduces air-hop during discharge, resulting in flatter trajectory and tighter shot grouping downrange.

Key Features

• Precision 6.02mm tightbore design – tighter tolerance than stock barrels for improved accuracy
• Stainless steel construction – corrosion-resistant and durable for extended use
• 113mm length – optimised for GBB pistol platforms
• Increased FPS – higher muzzle velocity for enhanced range performance
• Enhanced grouping – reduced shot scatter at 15–30m engagement distances
• Direct replacement upgrade – straightforward installation on compatible pistols

Real-World Use Cases

Whether you’re a precision target shooter refining your GBB pistol setup or a milsim operator seeking reliable semi-auto performance, this barrel upgrade delivers noticeable consistency gains. Field testing shows improved grouping in calm conditions and more predictable point-of-aim at outdoor skirmishes.

Technical Specifications

• Calibre: 6.02mm
• Length: 113mm
• Material: Stainless steel
• Bore Type: Tightbore precision barrel
• Compatibility: GBB pistols (model-specific fitment required)

Compatibility & Upgrades

Confirm your pistol platform before purchase – GBB pistols use varying hop-up and barrel assemblies. This barrel pairs well with aftermarket bucking upgrades and precision hop-up units for maximum accuracy potential. ZCI barrels are compatible with most Tokyo Marui-pattern GBB pistols and clones.

UK Legal & Site Notes

Inner barrels are unrestricted components in UK airsoft. This upgrade does not alter your weapon’s legal status. Always verify your site’s FPS limits (typically 0.98 J / ~330 fps for pistols at 0.20g) before fielding an upgraded setup.

Upgrade your GBB pistol’s accuracy and velocity with ZCI’s proven stainless steel barrel. Shop now and experience tighter grouping on the next skirmish.