AirTac Golden Eagle M4 Modular HPA Adapter - Plug & Play black
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AirTac Golden Eagle M4 Modular HPA Adapter - Plug & Play

The AirTac Golden Eagle M4 HPA Adapter is a fully modular, plug-and-play conversion kit designed to run HPA on Golden Eagle M4 Gas Blowback Rifles (GBBR) and compatible Western Arms (WA) system platforms. Pre-fitted with custom feed lips and an angled gas router, it features a heavy-duty high-flow valve built for maximum FPS consistency and sustained full-automatic fire.

119.95 € Tax included

96.733871 Tax excluded

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local_shipping FREE delivery to Estonian Parcel terminal from50€ (Omniva or DPD). Details

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Return policy
14-day return option after receiving the goods

Transform your gas blowback rifle into a highly consistent, cold-weather resistant powerhouse with the AirTac Golden Eagle M4 Modular HPA Adapter. Engineered as a complete, field-ready plug-and-play conversion solution, this adapter allows you to bypass expensive gas magazines and tap your Golden Eagle M4 directly into an HPA rig, utilizing standard airsoft M4 AEG magazines for high-capacity feeding.

Precision Engineering & Angled Gas Routing: To ensure flawless performance, this adapter comes pre-assembled with custom feed lips and a specialized, pre-fitted gas router. Unlike flat routers, this specific variant features an upwards-angled profile slanting directly toward the feed lips—a key design hallmark of the Golden Eagle PMAG system architecture. This meticulous geometry ensures a tight mechanical alignment with the nozzle, preventing gas venting during rapid bolt cycles.

High-Flow Valve & Modular Shim Systems: At the core of the AirTac design is a custom-engineered high-flow valve. This upgraded component yields superior air volume delivery, making the adapter highly reliable, capable of hitting elevated FPS metrics, and completely stable under sustained full-auto firing sequences. Recognizing manufacturing variances across different receiver brands using the Golden Eagle/WA specification, AirTac includes an advanced side shim system to optimize receiver lockup, along with magwell shims to guarantee your M4 AEG magazines sit perfectly snug without wobbling.

Key Features:

  • 100% Plug & Play: Comes fully assembled with internal gas routers and feeding lips—no donor magazine parts required.

  • High-Velocity Efficiency: Fitted with a high-flow valve to eliminate FPS drops during heavy rapid firing.

  • Customizable Air Seal: Included shim kits allow you to fine-tune the tolerance spacing between the adapter, magwell, and receiver body.

  • Rugged Durability: Manufactured to withstand continuous high-pressure HPA regulator outputs.

Technical Specifications:

  • Manufacturer: AirTac UK

  • Platform Compatibility: Golden Eagle M4 GBBR Series, WA (Western Arms) Base Designs

  • Magazine Compatibility: Fits standard M4 AEG magazines (when paired with M4 magwell)

  • Gas Router Style: Angled (Upward towards feed lips)

  • System Type: Modular HPA Conversion (Plug and Play)

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1. Orders & Shipping

What are the shipping methods?

We ship across Estonia using Omniva and DPD parcel terminals. You can also choose to pick up your order personally from our Tallinn store.

How fast will I receive my order?

In-stock products are usually dispatched within 1–2 business days. For items marked "On order" or "Tellimisel," delivery may take up to 15 business days.

Do you ship internationally?

Yes, we ship across Europe. To see the exact shipping cost, please enter your address during checkout or contact us directly.

3. Returns & Claims

Can I return a product if it doesn't fit?

Yes, a 14-day return right applies to products purchased from the online store. The product must be unused, in its original packaging, and with tags attached. Underwear and hygiene products cannot be returned.

Items purchased from the physical store cannot be returned for a refund; however, we can exchange them for a gift card or another product. Used products cannot be returned.

How do I return a product?

Please contact us at info@milshed.com to arrange the return method. In Estonia, returns via parcel terminal are usually free.

What happens if a product breaks?

Private individuals have a 2-year right to file a claim. If a defect appears within the first 6 months, it is assumed it existed at the time of purchase (manufacturing defect).