Prometheus Hop Up Bucking

The soft rating indicates the rubber compound is more pliable, which provides better grip on the BB. This is generally ideal for lower to mid-range FPS builds where you need maximum hop effect without needing excessive pressure.

This bucking is designed for standard AEG (Automatic Electric Gun) hop-up units. If your rifle uses a standard Tokyo Marui-style hop-up chamber, this will be a direct drop-in replacement.

Stock buckings are often made from generic rubber that can harden or tear over time. The Prometheus version uses a higher-quality, oil-resistant material that maintains a consistent seal and contact patch, leading to more predictable flight paths.

Yes. Over time, lubricants from the gearbox or barrel can migrate onto the bucking, causing it to swell or lose friction. This material resists that degradation, ensuring your hop-up performance remains consistent throughout the life of the part.

No modifications are required. Because it is engineered to precise tolerances, it should slide into your existing hop-up arm and barrel window without any cutting or sanding.