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Prometheus Smooth Air Seal Chamber Hop-Up Bucking For Airsoft AEGs (Model: 50 Degrees)

ID: 49585 (Bucking-Prom-FlatHop)
Prometheus Smooth Air Seal Chamber Hop-Up Bucking For Airsoft AEGs (Model: 50 Degrees)
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Prometheus / Laylax


Model Options:


  • Drop in upgrade component
  • Improves accuracy and range
  • Durable rubber construction
  • Designed for Flat and R-hopping
  • Smooth interior, no locating ridge or hop mound
  • Provides a longer, even, smooth contact surface against the BB
  • Ideal for use with Prometheus flat-hop nubs
  • Compatible with almost all Airsoft AEG barrels
Optimized for Flat and R-hopping

Manufacturer: Prometheus


Hardness: 50 degrees
Compatibility: Most R-Hop or Flat Hop capable Airsoft AEG hop-up units
Material: Rubber

About Prometheus / Laylax

Providing products in the Japanese market for the better part of 20 years, Laylax is well known for their high manufacturing quality and precise tolerances. Their tried and true parts and accessories have led them to be the leader in Japanese airsoft engineering.

13 Customer Reviews

(Write a review)

by James H. on 03/28/2021
"I used this purple bucking with the Fire Fly Namazu to "Flat Hop" my VM4A1 KWA.
I'm impressed.
.36s on a single size up grade spring to an M130.
Previously, was dropping out at about 175'.
Now, I'm getting 250', even with a slight head/cross wind @ 2-3 mph. Only using somewhere around 50% hop.
Chronoe'd at 370 fps with .36s; 470 with .20s.
Zero drop until around 240-250'.
However, I could over hop the BB at 250' by turning up my factory KWA rotary hop up (which isn't an impressive hop up. I couldn't hop hardly any weight with it) and probably get 300'.
Easy to install.
Had to do a tiny trim at the barrel retention clip.
by alan b. on 06/24/2020
"its perfect for use with barrel laylax and rhop
by Wilhelm B. on 08/04/2018
"Great bucking takes a lot of the work out of making your own. I installed it on my type 96 sniper with a Prometheus nub and the consistency is remarkable.

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