Prometheus SOPMOD Stock Conversion Connector for M4
Prometheus SOPMOD Stock Conversion Connector for M4

Prometheus SOPMOD Stock Conversion Connector for M4

$34.99

Convert your compatible Tokyo Marui NGRS M4 SOPMOD stock to a small Tamiya battery connection with this solder-free Prometheus/LayLax adapter. Featuring 24K gold-plated terminals and a protective 20A fuse, it enables convenient LiPo battery use without permanent modification.


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Benefits:

  • No Permanent Stock Modification Required No Permanent Stock Modification Required
  • Direct-Fit Tokyo Marui NGRS Compatibility Direct-Fit Tokyo Marui NGRS Compatibility
  • Integrated 20A Fuse Protection Integrated 20A Fuse Protection
  • 24K Gold-Plated High-Conductivity Terminals 24K Gold-Plated High-Conductivity Terminals
  • Solder-Free LiPo Battery Conversion Solder-Free LiPo Battery Conversion

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Prometheus SOPMOD Stock Conversion Connector for Tokyo Marui Next Generation M4

Upgrade your Tokyo Marui Next Generation Recoil Shock AEG with a clean, solder-free battery conversion. This Prometheus SOPMOD stock connector replaces the proprietary battery interface with a small Tamiya connector, allowing a compatible LiPo battery to fit inside the stock without permanent modification.

Product Overview

Designed by Prometheus/LayLax for Tokyo Marui NGRS M4 platforms with SOPMOD-style stocks, this conversion connector creates a direct, reliable path from the factory stock terminals to a widely used small Tamiya plug. The compact design preserves the rifle’s original stock configuration while making LiPo conversion faster and more convenient.

Features & Benefits

  • Direct-fit conversion from the proprietary SOPMOD battery system

  • Small Tamiya connector for compatible airsoft batteries

  • 24K gold-plated terminals support efficient electrical conductivity

  • Integrated 20A fuse provides added electrical protection

  • Solder-free installation with no permanent stock modification

  • Included rear dummy piece covers the opening for a clean finish

Specifications

  • Brand: Prometheus by LayLax

  • Product type: SOPMOD stock battery conversion connector

  • Connector: Small Tamiya

  • Terminal finish: 24K gold plating

  • Fuse: 20A

  • Application: Rear-wired Tokyo Marui Next Generation AEGs

Compatibility

Compatible with Tokyo Marui Next Generation SOPMOD-stock models, including the SOPMOD M4, CQB-R, DEVGRU Custom HK416D, and HK416 Delta Custom. Not compatible with the standard Tokyo Marui Next Generation HK416D or HK417, or with the original 8.4V 1300mAh SOPMOD NiMH battery.

What’s Included

  • Prometheus stock conversion connector with integrated 20A fuse

  • Rear stock-hole dummy cover

Installation

Disconnect the battery, confirm positive and negative polarity, then install the connector into the factory stock terminal assembly. No soldering is required. Use only a correctly sized, manufacturer-recommended battery and follow all battery safety instructions.

Common Product Questions

Find quick answers about our airsoft products, shipping and policies.

Can LA Airsoft install this part for me?

Yes. We can build and upgrade Hi-Capas, AAP platforms, and rifles. Choose your base gun and parts, then add the appropriate tech service.

The current custom-build service states that builds are normally completed in approximately 3 to 5 days, with the team reviewing the selected parts for compatibility.

Do I need tools or gunsmithing?

That depends on the upgrade. Simple external parts may be straightforward, but internal upgrades can require disassembly, reassembly, adjustment and testing.

If you are not comfortable working inside your airsoft gun, our team offers professional tech and custom-build services.

How quickly will my order ship?

Orders without preorder items are typically packed the same day when placed before 4:30 p.m. Central Time. Please note that occasional delays can occur during especially busy periods or when staffing is limited.

How should I maintain this product?

Regular maintenance helps preserve performance and reliability. Keep the product clean, follow the manufacturer’s lubrication instructions, and properly manage batteries, gas systems, and internal components. More advanced repairs or internal servicing should be handled by an experienced airsoft technician.

Will this part fit my platform?

Compatibility is product-specific. Check the brand, model, size, and platform named in the product description, such as Tokyo Marui Hi-Capa 4.3 or 5.1, AAP-01, Umarex/VFC Glock, or a particular AEG gearbox type.

Similar-looking parts are not always interchangeable, so contact our team with your exact model if you are unsure.

Will this part increase my FPS?

Not every upgrade increases FPS. Some parts are designed primarily for reliability, cycling speed, weight reduction, or gas efficiency. When a product has a tested FPS claim, it should be stated in the listing.