The Prometheus Wide Use Metal Chamber is a high quality hop up unit perfect for upgrading M4/M16 type AEGs. This highly rigid die cast unit is designed for ultimate accuracy.

Features:

• Optimised C clip eliminates play between hop unit and barrel
• Redesigned arm provides increased contact patch with bucking and nub
• Stepless rotary dial for easy and accurate hop adjustment

Compatibility:

M4/M16 AEGs with 1 piece hop up.

Installation notes

• A tension spring, which is required for correction installation, is NOT included
• Depending on your receiver, the unit may need to shimmed to ensure smooth feeding
• Overtightening the stock tube bolt (screwing into the spring guide) may cause missfeeding
• The dimensions of the unit are intentionally tight to prevent wobble, some sanding may be required to interface smoothly with your barrel base or outer barrel