Description
Laylax Prometheus Elite CNC Aluminum Rotary Hop-Up Chamber for M4/M16 AEG
The Prometheus Elite CNC hop-up chamber is a precision-machined aluminium hop-up unit for M4 and M16 pattern AEGs, listed here as a rotary type. The hop-up chamber holds the inner barrel and bucking and controls how much backspin the BB receives, so a rigid, accurately made chamber is the foundation for consistent range and accuracy.
Prometheus is LayLax’s internal upgrade line. A retailer describes the Elite CNC chamber for M4 as CNC-machined aluminium made in Japan, compatible with standard hop-up, flat hop and R-hop barrels and buckings, and standard nozzles.
Design and adjustment
Compared with the plastic chambers fitted to many stock AEGs, a CNC aluminium chamber holds the barrel and bucking more firmly and resists flexing and wear. The same retailer lists a ball-bearing spring set that gives positive clicks at each hop setting and can be removed if you prefer finer, stepless adjustment, along with a vertical hop tension arm and a hop arm lever.
LayLax recommends its own Prometheus inner barrels and buckings with the chamber, as they are made to matching dimensions.
Fitting
Fitting means stripping the upper receiver and moving your inner barrel and bucking into the new chamber. The retailer notes that not all AEG models are fully compatible without modification, and suggests using the stop screw or the original barrel stabilising springs to secure the fit. Check that the nozzle seals cleanly against the bucking before reassembling the rifle.
Key features
- Prometheus Elite CNC hop-up chamber
- CNC-machined aluminium, made in Japan (per retailer listing)
- Listed for M4 and M16 pattern AEGs
- Works with standard, flat hop and R-hop barrels and buckings (per retailer)
- Positive-click ball-bearing adjustment that can be removed for finer setting
- Vertical hop tension arm
- Rigid alternative to plastic stock chambers
Compatibility
The chamber is listed for M4 and M16 pattern AEGs. A retailer lists compatibility with standard M4-type builds including Krytac, Tokyo Marui and G&G, but warns that not all AEG models fit without modification, and Prometheus makes separate versions of the Elite chamber for some brands. It is not for Next Generation Recoil Shock rifles. Please check your replica and contact us if you are unsure.
It accepts standard AEG nozzles and standard, flat hop and R-hop inner barrels and buckings.
Care and maintenance
Keep oil and silicone off the inner barrel and bucking, as it causes inconsistent hop. Clean the chamber and barrel when you have the rifle stripped, check the hop arm moves freely, and use clean, seamless BBs of a consistent weight.
If you are not confident working on your replica, have the part fitted by an experienced technician.
Who is it for?
It is for M4 owners and technicians building an accurate, consistent rifle who want a rigid, precise aluminium chamber with flexible hop-up options.
Please note: The inner barrel, nozzle and tools are not included. Please check the product images and contact us for the exact contents of this version.
