Studio shot of the small Tokyo Marui H51-40 metal trigger sear.
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Tokyo Marui Hi-Capa 5.1 Original Trigger Sear (Part H51-40)

Restore your pistol’s crisp trigger break and flawless firing cycle. This is the genuine Tokyo Marui factory replacement trigger sear (OEM Part H51-40) designed specifically for the legendary Hi-Capa 5.1 Gas Blowback series. If your hammer is slipping, failing to lock back, or dropping unexpectedly, this original precision component is exactly what you need to return your sidearm to peak performance.

  • Genuine Tokyo Marui OEM: Authentic factory replacement part guaranteeing perfect spec tolerances and seamless operation.
  • Fixes Hammer Follow: Replaces worn or rounded sears that cause dangerous hammer-drop or accidental full-auto cycling.
  • Crisp Trigger Reset: Restores the signature, predictable factory trigger break and reset feel.
  • Drop-In Installation: Requires no modifications or custom filing when installed into standard Tokyo Marui fire control groups.

4.95 € Tax included

3.991935 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

Genuine Factory Performance and Safety Restoration

The trigger sear is one of the most critical components inside your gas blowback pistol's fire control group. It is responsible for catching the hammer when the slide cycles and holding it securely until the trigger is pulled. Over thousands of rounds, the edge of a factory sear can naturally wear down. When this happens, your pistol may suffer from "hammer follow"—where the hammer drops prematurely, causing cycling failures, gas vents, or hazardous double-firing. Upgrading or replacing it with this genuine Tokyo Marui H51-40 Sear immediately rectifies these common wear issues.

Unmatched Tokyo Marui Specifications

While aftermarket upgrade parts often require tedious hand-fitting, polishing, and custom modifications to work nicely together, original Tokyo Marui parts are engineered to perform flawlessly out of the box. This replacement sear is manufactured to the exact tolerances mandated by the factory in Japan. It delivers a perfect balance of smooth trigger engagement and secure hammer retention, ensuring your Hi-Capa operates safely and reliably under rapid-fire conditions.

Broad Platform Compatibility

While specifically cataloged as the Hi-Capa 5.1 H51-40 part, this sear serves as a standard architecture component for Tokyo Marui's extensive single-action gas blowback line. It is highly compatible with the Hi-Capa 4.3 series, the Dual Stainless models, and standard TM-spec 1911 Government / MEU pistols. It is an absolute must-have spare part for any airsoft technician's maintenance kit or a player's emergency repair box.

Technical Specifications

  • Product Type: Pistol Fire Control Group Component (Trigger Sear)
  • Factory Part Code: H51-40 (Also referred to as Hi-Capa 40 / Sheer)
  • Base Compatibility: Tokyo Marui Hi-Capa 5.1 Gas Blowback Pistol Series
  • Extended Compatibility: Tokyo Marui Hi-Capa 4.3, 1911, and MEU series (as well as TM-spec clones)
  • Material: Precision-cast zinc alloy / specialized factory metal formulation
  • Function: Secures and releases the hammer mechanism during the trigger pull cycle
Tokyo Marui
MRZ187
New
1 Item
8434645030511

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).