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Custom "Undertaker" M4 (Metal) Gel Blaster

Custom "Undertaker" M4 (Metal) Gel Blaster

Regular price $849.99
Regular price Sale price $849.99
Liquid error (snippets/price line 143): divided by 0% OFF Sold out + Free Shipping + Free Gift

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Custom "Undertaker" M4 (Metal) Gel Blaster

Custom "Undertaker" M4 (Metal) Gel Blaster

Regular price $849.99
Regular price Sale price $849.99

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Product Description

Welcome to the "Undertaker" custom gel blaster. Don't be fooled by it's simplicity, this blaster has a fully worked competition modification done to it and has a shooting power of an insane 380+ feet per second!

With a slick full metal external appearance this blaster is one of the most powerful we have here at GBU and once you pull that trigger you will know exactly why!

Not only is it powerful, this custom has a gear ratio of 12:1 which makes the rate of fire extremely fast so you can pepper your opponent in any situation.


If you are looking for the perfect agile and powerful blaster then this is it, the custom "Undertaker" has it all.

Blaster Features
  • V2 Metal Gearbox Housing
  • Full Metal Stage 3 Internal Gearbox Build
  • M110 SHS Upgraded Spring
  • Gold Super High Torque Motor
  • Metal Retro Arms CNC Trigger
  • Magpul Polymer Pistol Grip
  • Tamiya Battery Connection
  • Magpul M4 Nylon Buttstock
  • Metal Inner and Outer Barrel
  • Wells Magazine
  • Metal V2 Receiver
  • 10" Metal Handguard
In The Box

1 x New "UndertakerGel Blaster Toy Gun
1 x WELL Magazine
1 x 11.1v Li-on Rechargeable Battery 
1 x B3 Balanced Charger

Fire Power

Velocity: 380+ Feet Per Second (FPS)

Shipping & Returns

If you need to return a product due to factory issues or damage, just email our admin team at We'll send you a return label free of charge to fix or replace the product promptly.

Standard shipping 5-10 business days
Express shipping 2-3 business days.

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Customer Reviews

Based on 1 review
Anthony T.
The” Indertaker”; a powerful sleeper

I was so excited to have something shooting 380 FPS, but did not 3anr anything fancy a simple M4A1, and the custom has achieved that snd more!!!! The only issue is my a.k.a. Ultra and beast gel balls all blew apart. So I use GBU the new” Ultra Elite balls, so much harder and had no problems. I can empty the magazine in seconds. Thank you so much to the team GBU for their professionalism, assistance help online communication [Anna} and advice.
So happy!!!!!’Thanks again GBU :+1::skin-tone-3::+1::skin-tone-3::u1F1E6::u1F1FA::u1F1E6::u1F1FA::u1F1E6::u1F1FA::u1F1E6::u1F1FA:

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What is a Gel Blaster?

Gel blasters are hobby-sport toys that simulate military-style skirmishes. They are electric
or gas-powered devices that shoot soft, water-type orbeez called gel balls. Gel blasters offer
a safe and enjoyable way to engage in recreational activities, team-building exercises, and
competitive games.

Are Gel Blasters legal in Australia?

The legality of gel blasters varies by State. It is important to familiarize yourself with local laws and regulations regarding gel blasters before purchasing or participating in related activities, But yes overall Gel blaster’s used accordingly are legal in Australia.

How do Gel Blasters work?

Gel blasters use electric or gas-powered mechanisms to propel gel balls. Electric gel blasters are battery-powered and provide a consistent shooting experience, while gas-powered gel blasters use compressed gas to create a more realistic recoil and sound effect.

Are Gel Blasters safe for kids?

Yes, gel balls and gel blasters are harmless and pose no danger when they hit their targets or kids. They are made from biodegradable materials and disintegrate over time, ensuring minimal environmental impact.

How do I maintain and care for my Gel Blaster?

Maintaining your gel blaster is essential to ensure its longevity and optimal performance. Here are some general tips to help you care for your gel blaster:

  • Read the manufacturer's instructions:
    Familiarize yourself with the specific maintenance requirements and guidelines provided by the manufacturer for your gel blaster model.

  • Cleaning:
    Regularly clean your gel blaster, especially after use, to remove any dirt, debris, or gel residue. Use a soft cloth or brush and water to gently wipe down the exterior. Avoid submerging the blaster in water unless specified by the manufacturer.

  • Lubrication:
    Proper lubrication is crucial for the smooth operation of your gel blaster. Follow the manufacturer's recommendations on the type of lubricant to use and apply it to the designated areas, such as the gearbox and moving parts. Avoid over-lubrication, as it can attract dirt and cause malfunctions.

  • Battery care:
    If your gel blaster is electric-powered, take care of the battery. Follow the instructions regarding charging and discharging cycles to maintain battery life. Avoid completely draining the battery or leaving it unused for extended periods.

  • Seek guidance:
    To ensure you have a comprehensive understanding of gel blaster maintenance, consider referring to the GBU (Gel Ball Undercover) YouTube channel. They provide informative videos on various aspects, including maintenance, care, and troubleshooting, specific to gel blasters. These videos can offer valuable insights and practical tips to keep your gel blaster in top shape.

Remember, regular maintenance and proper care will not only extend the lifespan of your gel blaster but also contribute to a consistent and enjoyable shooting experience.

Can I modify my Gel Blaster?

Yes, gel blasters can be modified to enhance their performance or customize their appearance. 

GBU (Gel Ball Undercover) offers a wide range of modification parts and accessories for gel blasters, providing enthusiasts with the opportunity to personalize and upgrade their blasters according to their preferences. Whether you're looking to improve accuracy, increase range, enhance durability, or simply add aesthetic enhancements, GBU offers a diverse selection of modification options.

It's important to note that modifying your gel blaster may require technical knowledge and skills. If you're new to gel blaster modifications, GBU can provide assistance and guidance through their installation help services. This ensures that you can make modifications safely and effectively, optimizing the performance of your gel blaster.

Remember to familiarize yourself with any local laws or regulations regarding gel blaster modifications, as certain modifications may be restricted or require specific permits in your area. Always prioritize safety and follow proper procedures when modifying your gel blaster.

How can I ensure safety while using Gel Blasters?

Safety should always be a top priority when using gel blasters. It is crucial to wear appropriate protective gear, such as eye protection, and follow all safety guidelines provided by the manufacturer. Always use gel blasters in designated areas and ensure that participants adhere to established rules and regulations.