6.02 Inner Barrel for GBB 370mm | Maple Leaf

6.02 Inner Barrel for GBB 370mm | Maple Leaf – for your replica

This inner barrel is the heart of your GBB replica and largely determines the accuracy of your shots. As part of the hop-up system, the inner barrel guides the BB from the hop-up chamber to the end of your outer barrel. A quality GBB inner barrel such as this Maple Leaf version ensures consistent BB trajectories and better grouping at distance. You might consider an inner barrel upgrade when you want to improve accuracy, when your current barrel is worn, or when you need a different barrel length for your build.

Technical specifications

This Maple Leaf inner barrel is made from stainless steel with a silver-coloured finish. The inner diameter is 6.02mm, which is a tight bore configuration that maximises air efficiency. With a barrel length of 370mm, this barrel is suitable for mid-length carbines and certain DMR configurations. The stainless steel material offers excellent durability and maintains its smooth internal finish even after prolonged use.

Compatibility and application

This inner barrel is designed for GBB (Gas Blowback) replicas and fits systems that require a 370mm barrel length. The 6.02mm diameter makes this barrel suitable for builds where accuracy is prioritised over volume or where gas efficiency is important. Installation requires disassembly of your hop-up unit and outer barrel assembly, which demands intermediate technical skills. Always check that the 370mm length matches your current setup or planned configuration.

Ready to add the 6.02 Inner Barrel for GBB 370mm | Maple Leaf to your setup?