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Laylax Prometheus Stainless Steel Inner Barrel for AEG (135mm)
Elevate your compact AEG's grouping tightness and muzzle velocity with the Laylax Prometheus Stainless Steel Inner Barrel for AEG (135mm). Precision-engineered in Japan from high-grade SUS304 stainless steel, this 6.03mm tightbore EG inner barrel is purpose-built to deliver extreme durability and consistent shot placement. Tailored specifically for ultra-compact platforms like the Krytac SPD, PDWs, and stubby CQB builds, it maximizes air compression and eliminates internal barrel vibration. Upgrade your compact airsoft rifle with the legendary precision of Laylax Prometheus today.
When building a high-performance personal defense weapon (PDW) or close-quarters battle (CQB) rifle, maintaining long-range accuracy from a short outer barrel can be a challenge. The Laylax Prometheus Stainless Steel Inner Barrel (135mm) solves this by bringing Japan’s premier tightbore engineering to compact Airsoft Electric Rifles (AEGs). Known across the industry as the benchmark for precision inner barrels, the Prometheus EG series provides unyielding rigidity and flawless internal finishing.
SUS304 Stainless Steel Construction & 6.03mm Bore
Unlike standard factory brass or aluminum barrels that can bend, scratch, or flex inside the outer barrel, this Prometheus barrel is CNC-machined from cold-forged SUS304 stainless steel. The 6.03mm internal diameter creates a tight air seal around standard 5.95mm BBs, channeling expanding cylinder air directly behind the projectile. This improved pneumatic efficiency delivers an immediate boost in FPS without placing additional strain on your gearbox spring, giving your short-barreled build maximum punch.
Precision Crown & Optimized Hop-Up Window
The interior bore is mirror-polished to minimize surface friction as BBs travel through the 135mm length. At the muzzle tip, a precision-cut crowning stabilizes the escaping air cushion, ensuring that backspin generated by your hop-up bucking remains perfectly centered upon exit. The barrel features standard AEG hop-up notch keyways alongside an optimized window, ensuring seamless drop-in fitment with Tokyo Marui-spec V2/V3 hop-up chambers and aftermarket buckings.
Key Features & Technical Benefits:
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SUS304 Stainless Steel Build: Ultra-durable construction prevents flexing, warping, and internal surface scratching.
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6.03mm Precision Tightbore: Increases air retention and velocity (FPS) while tightening down-range shot groupings.
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135mm Compact Length: Ideal factory-spec upgrade for Krytac SPD, shorty M4/PDW builds, and custom CQB platforms.
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Mirror-Polished Internal Bore: Minimizes friction to preserve backspin consistency and maximize effective range.
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Made in Japan Excellence: Manufactured to strict Japanese tolerances for flawless drop-in chamber alignment.
Installation & Field Guidance
Before installing your new Prometheus inner barrel, always run a clean microfiber patch lightly moistened with rubbing alcohol through the bore to remove any protective factory packing oils. Pair this barrel with a high-quality 60° or 70° AEG hop-up bucking for optimal backspin generation. Due to the tight 6.03mm internal diameter, strictly use high-grade, precision 5.95mm competition BBs to prevent jamming during high-rate-of-fire operation.
Pair this with a Prometheus Purple Bucking for the ultimate accuracy enhancement in your compact AEG!
| SKU | 511776 |
|---|---|
| Type | Inner Barrel |
| Brand | Laylax |
| Weapon Category | Parts |
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.