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Laylax Prometheus Stainless Steel Inner Barrel for M4A1 MWS AEG (6.03mm - 250mm)
Elevate your rifle's range, velocity, and shot grouping precision with the LayLax Prometheus Stainless Steel Inner Barrel for M4A1 MWS (6.03mm - 250mm). Precision-crafted in Japan under the renowned Prometheus line, this 6.03mm tightbore inner barrel optimizes gas compression while maintaining enough clearance to prevent jamming during rapid fire. Constructed from high-strength stainless steel with a mirror-polished interior wall, it minimizes surface friction to deliver ultra-consistent BB spin and remarkably tight flight paths. Specifically machined for the Tokyo Marui MWS GBB system, it serves as the ultimate drop-in precision upgrade for CQB and short-barreled setups.
Achieving maximum distance and grouping consistency requires exceptional tolerance control along the entire length of your barrel. The LayLax Prometheus Stainless Steel Inner Barrel for M4A1 MWS (6.03mm - 250mm) delivers world-class Japanese manufacturing quality designed to unlock peak marksmanship performance from your gas blowback platform.
Balanced 6.03mm Tightbore Precision
Featuring a finely tuned 6.03mm internal diameter, this Prometheus inner barrel strikes the perfect balance between enhanced muzzle velocity and operational reliability. The tight bore creates a superior air cushion behind the BB, converting expanding gas into forward kinetic energy with minimal pressure loss. This 6.03mm sizing provides tight shot groupings at long range while maintaining reliable feeding tolerance during rapid semi-automatic or full-automatic firing cycles.
Purpose-Built MWS Cut & Stainless Steel Durability
Manufactured from high-grade stainless steel, this inner barrel resists bending, vibration, and internal corrosion under heavy field use. The interior bore undergoes an extensive honing process to create a glass-smooth mirror finish, ensuring uniform contact with the hop-up bucking and stable backspin down the tube. Engineered specifically for the Tokyo Marui M4A1 MWS Gas Blowback Rifle series, the barrel features precision-machined hop-up retention cuts and bucking alignment windows designed to drop seamlessly into the TM Z-System hop-up chamber.
Ideal 250mm Length for CQB & Compact Builds
Measuring 250mm in length, this barrel is a direct-fit upgrade for shortened Tokyo Marui MWS configurations, CQB outer barrel lengths, or custom short-barreled rifle builds. Upgrading to a genuine LayLax Prometheus barrel ensures flat, predictable shot trajectories that give you a decisive edge in fast-paced room clearing and medium-range outdoor firefights.
Key Features & Technical Benefits:
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Precision 6.03mm Bore: Increases FPS and tightens shot groupings without compromising gas blowback reliability.
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High-Grade Stainless Steel: Resists internal surface wear, barrel flexing, and recoil vibration.
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TM MWS Specific Cut: Machined to drop directly into Tokyo Marui M4A1 MWS GBB hop-up chambers.
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Mirror-Polished Finish: Smooth internal surface minimizes friction for flat, stable BB trajectories.
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250mm Compact Length: Ideal performance upgrade for short outer barrels, CQB builds, and compact MWS rifles.
| SKU | 511740 |
|---|---|
| Type | Inner Barrel |
| Brand | Laylax |
Our courier partners deliver from Monday to Friday, excluding Bank Holidays. We will attempt to dispatch all packages within 24 hours, although at peak times this may take slightly longer. Orders with products with two-tone service or Defence Check may take longer to dispatch.
Once the order is dispatched you will get an email with the tracking number and which courier partner it’s going to be delivered via. Any missing/incorrect items need to be reported with 48hrs of signed delivery.
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Faulty Product?! Unfortunately that is part of life but be rest assured we are here to help! Contact one of our friendly staff via phone or email. Stating what the problem is, if we can resolve the problem via phone or email great if not then they will advise how to send it back and what details we require.
The gun will be sprayed 51% in a bright/primary color (we do only blue, green and red currently). The process of two toning currently runs at 2 working days depending on Drying Time, which is effected by Ambient Temperature and Weather. and currently no express delivery is available for this even if you select it at checkout.