Northmark Vault x EDGI 6.05mm Stainless Steel 300mm Precision Inner Barrel

Manufactured by EDGI, this 6.05mm stainless steel inner barrel is built for precision-driven AEG builds where consistency and bore quality matter more than marketing claims. Each barrel is precision machined from high-grade stainless steel and hand-lapped down to a 1-micron finish, delivering exceptional internal smoothness and bore consistency.

The 6.05mm inner diameter provides a stable balance between air efficiency and tolerance forgiveness, making it well suited for high-consistency builds running properly tuned compression systems. A 5mm tapered crown promotes clean BB exit and reduced turbulence at the muzzle, supporting consistent downrange flight characteristics.

Designed with serious R-Hop users in mind, this barrel features a 6mm long square-cut R-Hop window, allowing precise and stable R-Hop patch installation without requiring additional modification. The window geometry makes it ideal for properly cut and fitted R-Hop setups focused on repeatable performance.

This is a precision component for builders who understand bore quality, alignment, and compression tuning.

Technical Specifications

Manufactured by EDGI
6.05mm inner diameter
Stainless steel construction
Hand-lapped to 1-micron internal finish
5mm tapered crown
6mm long square-cut R-Hop window
Tokyo Marui–spec AEG compatibility

Builder Notes

• Optimized for properly installed R-Hop systems

• Best paired with high-quality compression components

• Designed for consistent, repeatable performance rather than maximum velocity chasing