Introducing Prometheus “EG Barrel W” Wide-Expanded HOP window model, based on our EG barrel with the renewed Wide-Expanded HOP window for a variety of HOP nubs and tensioners.
Inner barrel bore width of 6.03mm with a tolerance of +/-0.01mm, made of stainless steel (SUS) for superior strength necessary to maintain accuracy without the need for coatings. The HOP window adopted in this model is a wide type similar to Prometheus KRYTAC-compatible EG barrel, making it suitable for setups involving R-HOP and other extended hop tuning techniques. Also compatible with other tuning setups, allowing for a broader range of customization options.

Compatibility: 

• Tokyo Marui NGRS Series*
• Tokyo Marui Standard AEGs 
• TM Spec Standard AEGs 

Dimensions 

• 300mm Length 
• 6.03mm Diameter 

Includes: 

• EG Barrel W (300mm) x1 

*This item is not compatible with Tokyo Marui NGRS MP5A5 and MP5SD6 series as well as Standard M14 AEG series