Description
Laylax Prometheus Stainless Steel Inner Barrel for M4A1 MWS AEG (6.03mm – 250mm)
This is a Prometheus stainless steel inner barrel, 6.03mm bore and 250mm long, listed for the M4A1 MWS. It is a precision replacement barrel from LayLax’s Prometheus internal upgrade line, made for players who want a quality bore in a shorter rifle build.
Prometheus barrels are widely used by players and technicians who want consistent shooting from a straight, durable part rather than a soft stock barrel.
Stainless steel precision
Stainless steel is hard and resists both corrosion and bending, so the bore stays straight and smooth, and it keeps its accuracy without relying on a coating. The 6.03mm bore gives the BB a close, consistent fit as it travels down the barrel, which reduces air loss and helps shot-to-shot consistency.
At 250mm this is a short barrel, suited to a compact outer barrel and handguard set-up. Shorter barrels rely more heavily on the hop-up to set the BB’s flight, so pair it with a fresh bucking and set the hop carefully.
Please check before ordering
MWS is the name of Tokyo Marui’s M4 gas blowback system, while this product’s name also says AEG. Please check the product images, and contact us with your replica’s make and model before ordering, so we can confirm it is the right barrel for you.
Key features
- Prometheus stainless steel inner barrel
- 6.03mm bore
- 250mm length for compact builds
- Listed for the M4A1 MWS
- Hard, corrosion-resistant stainless steel
- Helps consistency and efficiency
Compatibility
This barrel is listed for the M4A1 MWS. Barrel fit depends on the hop-up unit and outer barrel length of your replica, so please check before ordering. Use good quality seamless BBs.
Care and maintenance
Clean the bore every few games with a cleaning rod and a dry or very lightly oiled patch, and finish dry. Use good quality seamless BBs of a consistent weight, as dirty or damaged BBs are the main cause of jams in tight bore barrels, and keep oil off the hop-up rubber.
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 building a compact, short-barrelled rifle who want a durable stainless steel barrel for consistent performance.
Please note: Only the inner barrel is supplied. The hop-up rubber and tools are not included.
