Jinming Gen8 Upgraded Gel Blaster - US STOCK


8th generation of Jinming Gearbox

Full Nylon body

One of the best gel blaster




    The Colt M4A1 is an evolution of the famous Colt M4 which has been used by the US military since 1994. This version of the COLT M4 is equipped with the free burst function and has a removable handle that can be replaced by a vision scope.

    Jinming's interpretation has a viewfinder with a laser on top.

    The M4A1 have 4 other side rails to add some accessories.

    The M4A1 J8 is one of the greatest successes of recent years. It marks a major turning point in the world of gel blasters.

    This blaster gel has the famous 8th generation gearbox from Jinming. It is made of PC which makes it firm and solid. The texture is also more qualitative than the previous generations.

    This water gun is really appreciated by users because it is easy to use and offers an unlimited number of possibilities for improvement.

    Indeed, from the gearbox to buttstock, all can be upgrade. You can add metal parts, anodized parts, increase performance by optimizing the gearbox or changing the battery. 




    Presentation of Jinming M4A1 GEN8:

    Here are the different parts that make up this gel gun.


    Detail of upgraded parts: 

    Metal gear
    Metal gas cylinder
    Metal cylinder
    Upgraded spring (2 sizes)
    Upgraded metal aluminum tube 
    Upgraded Black King Kong 480 Motor
    11.1V Battery + Charger

    FPS: 280 FPS or 240 FPS depending on the spring installed

    Everything you need to get the most out of a gel blaster gun.

    2 springs, one for accuracy, one for higher FPS, test on the J10: 

    In this video, first test with accuracy spring and the second with the high FPS spring. 


    The GBG service: 

    We care about the quality of our products. Every gel blaster upgraded have serial number and products are tested before shipping

    All products are equipped with an additional orange tip and orange tape in order to respect the legislation and the safety of all.

    2 springs are included to adjust the product to your liking: Ultra precision or ultra powerful. 

    Details of the product: 

     The battery is located along the buttstock. (7.4v for the original and 11.1v for the upgrade). 

    The M4A1 J8 have a holographic scope

    M4A1 gen8 have 5 rails of which are on the fishbone.

    Lot of magazine are available for this gel blaster. You can put drum magazine for example. 

    Pull the bolt to open the access to the gearbox.

    Without function of the barrier rod, the interior has a pressure spring, can be pressed.

    What is included in the box of the gel blaster Jinming M4A1 GEN8 UPGRADED?

    1 x gel baster JINMING M4A1 Gen8 

    1 x magazine

    1 x grip

    1 x battery 11.1 V

    1 x USB Charger

    1 x Packet of gel balls


    Not original box due to upgrade. Photo of the product assembled. 

    The JM M4A1 J8 is no longer working?

    Dont worry this product is completely removable and easy to repair. The M4A1 GEN8 is the product with the most spare parts on the market.


    How to use this gel blaster gun?


    1. Install the product according to the instructions.
    2. Soak the balls in as much water as possible for 4 to 6 hours.
    3. In same time, charge the battery.
    4. Place the battery.
    5. Fill the magazine with gel balls.
    6. Let’s go for the adventure.

    Detailed explanations:


      1. Install the product according to the video:


    1. Wire docking
    2. Install the grip
    3. Place the battery
    4. Install the rear support folding
    5. Install the muzzle, mechanical sight, barrel and fire cap
    6. Fix it

    1. Soak the balls in as much water as possible for 4 to 6 hours.


    Whish gel balls should be use?

    This model uses 7-8 mm gel balls. The optimal size is 7.45 mm.

    You can find the perfect gel balls for this model here:

    Gel balls are available in 2 packages: 20000 or 40000 gel balls and 4 colors: Clear, Blue, Orange and Green.

      1. Charge the battery

    Connect the battery to the USB charger. Its 3 pins charger used for this type of battery.

    Connect the USB to your computer.

    When the LED turn to green, its OK.


    1. Place the battery


    It is necessary to place the battery in the grip.



    1. Fill the magazine with gel balls.

    1. Open the magazine
    2. Pouring the balls
    3. Preload
    4. Shot

    What is the performance of this gel blaster?

    Shooting performance: 240-290 fps

    max range of this gun: At least 20M straight and 35M about curve shooting.


    You can click here to learn more about performance measurement: “how are performance measured?”

    What is the capacity of the magazine?


    The capacity of the magazine is about 200 gel balls.



    What is the size of the product and the box?


    The product is 71 cm long and 30 cm high.


    Please observe the following safety rules: 

    - Please follow the rules in your country and state. 
    - Gel blasters are toys and should be used as such. 
    - They should not be used in public places.
    - Use the products with proper equipment and protective eyewear glasses
    - Minors may play with the products only if legal guardians allow it. 
    - Gel blasters must be transported in their original boxes. 







  • Brand: Jinming

    Model: M4A1

    Version:  J8 - upgrade

    Color: Black

    Material: plastic ABS and electronic components

    Use age: 14 years old and above

    Size balls: 7-8mm

    Size: 71 x 30 cm