Prometheus Straight Chamber Hop Up Bucking

The soft rating indicates the material durometer, which provides better grip on the BB. This is ideal for lower to mid-range FPS builds where you need consistent hop-up application without excessive force.

This bucking is designed specifically for the Tokyo Marui standard. While it may fit other brands that follow TM specifications, it is not guaranteed to work with proprietary hop-up chambers or non-standard designs.

This bucking is designed specifically for flat-hop configurations. If you are looking to improve your range and accuracy by using a flat-hop nub, this bucking provides the necessary surface area to achieve that consistent, predictable backspin.

Yes, because this is designed for flat-hop setups, you will likely need to modify or replace your existing hop-up nub with a flat-style nub to get the intended performance. It will not function optimally with a standard, rounded nub.

The soft material is generally more resilient in cooler temperatures compared to harder compounds, which can stiffen and lose grip. However, extreme cold will always affect hop-up performance regardless of the bucking material.