







LAYL-4571443182197
Elite CNC Hop-Up Chamber for M4
Pairs well with
Prometheus ELITE CNC Hop-Up Unit
●Compatible with standard hop-up, flat hop, and R-hop
●CNC construction
●Includes 2 Prometheus buckings and nubs
●Ball-bearing spring set for secure adjustment with positive clicks
●Compatible with standard nozzles
●Widely compatible chamber design
The Prometheus ELITE CNC parts series takes Prometheus designs to the highest level for those seeking the most premium hop-up unit. The highly customizable ELITE hop-up chamber allows the use of standard, flat hop, and R-hop inner barrels and buckings without compromising performance. Use the included ball-bearing spring set for secure adjustment with positive clicks at every hop setting, or remove it for finer adjustment—the choice is yours!
Our two most popular standard buckings are included, the purple bucking and the blue bucking, covering a wide range of BB weights and hop configurations. The precision CNC-machined chamber is manufactured in Japan and is compatible with a wide variety of standard M4-type builds, including Krytac, Tokyo Marui, G&G, and many more!
■ Brand: Prometheus
■ Includes:
・ CNC Hop-Up Chamber
・ Prometheus Purple Bucking (soft)
・ Prometheus Blue 60-Degree Bucking (firm)
・ Ball-bearing spring set (removable for finer adjustment)
・ Barrel clip
・ Vertical hop tension arm
・ Hop arm lever
・ O-ring
・ Stop screw
■ JAN: 4571443182197
■ Caution:
※ Not all AEG models are fully compatible without modifications. Use the stop screw or the original barrel stabilizing springs for a secure fit.
※ Be careful not to apply silicone spray or oil inside the inner barrel or on the hop-up bucking, as this may cause inconsistencies.
※ The use of LayLax Prometheus inner barrels and hop-up buckings is recommended for optimal performance due to the preset fitting dimensions.
Complimentary shipping & returns

Elite CNC Hop-Up Chamber for M4
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Do I need an account to order?
No, but an account lets you save addresses, review orders, download invoices and manage wish‑lists.
When will my order ship?
We ship in-stock orders twice a week, on Mondays and Wednesdays. Orders placed Monday or Tuesday leave on Wednesday; orders placed Wednesday to Sunday leave the following Monday. Mainland Spain usually receives them 1–2 business days after dispatch. A tracking e-mail follows automatically.
Can I change or cancel my order?
Yes, e-mail info@skirmshop.es or use the contact form before your order’s shipping day (Monday or Wednesday)
with your order number. After dispatch, changes aren’t possible.
Do you ship outside the EU?
Yes, the shipping rates and import taxes will be calculated at checkout.
What is the minimum age to buy an airsoft replica?
Please check your own governments regulations for the minimum required age.
Don't forget to send your ID.
