JM M4A1 Gen 8.5 Nylon Gel Blaster

(7 customer reviews)

$169.99 $149.99

Get it now with for $52.50 + 3 payments of $32.50 ?

0% Interest and ZERO fees!

This is one of the absolute best Gel Blasters out at the moment and a favorite among enthusiasts, and no surprise due to it’s straight-out-of-the-box performance. It has a full black colour scheme, tip-to-stock, and massive potential for serious upgrades and modifications. Whether you’re new to the Gel Blaster scene or you’ve been around for a while, this is definitely one you need to add to your arsenal. Be the envy of all your mates when they see you with this beast.

Out of stock

Get notified when this item is back in stock


JM M4A1 J8 (M4 Gen 8) Gel Blaster


  • Brand: JinMing
  • Model: M4A1 Gen 8 (J8)
  • Released:
    • November 2017 (Gen 8)
    • November 2019 (Gen 8.5)
  • Type: Automatic / Battery Operated
  • Firing Mode: Full Auto
  • Solid Quality Construction
  • Nylon Gearbox Shell
  • Mag Fed
  • Full Black Color Scheme
  • 20mm Rails on All 4 Sides for Tactical Accessories
  • Rubber Capped Butt Stock
  • Adjustable Stock Length
  • Sling Attachment Points
  • Holographic Sight with Illumination
  • Removable Muzzle
  • Highly Upgradeable
  • Mag Capacity: Approx 180 Gel Balls
  • Uses 7-8mm Gel Balls


  • Up to 270 Feet Per Second
  • Up to 11 Rounds Per Second (7.4v Battery)
  • Up to 20 Rounds Per Second (11.1v Battery)
  • Up to 25m Firing Distance


  • Length: 68cm
  • Width: 5.5cm
  • Height: 23.5cm
  • Weight: 680g

Package Includes:

  • 1 x Brand New M4A1 Gel Ball Gun
  • 5 x 500 Packs of Gel Balls
  • 1 x Bottle
  • 1 x Rechargeable 1200 mAh 7.4v Li-ion Battery. (Upgrade to a 11.1v Li-Po Battery to double rate of fire)
  • 1 x USB Charging Cable
  • 1 x Reflex Scope with Illuminated Cross-hair (Battery Operated)
  • 1 x Safety Glasses

We also have drum mags, laser sights, hop ups, alloy barrels, higher voltage and larger capacity batteries, stronger springs and metal gears, including full upgrade kits for this model. Send us a message for more info.


***Please note: Gel balls included with Blasters are generally of low quality and can often cause feeding issues, we highly recommend purchasing our high quality Hardened Gel Balls for the best performance***


Gel Ball Hydration 101


  1. Pack of Gel Balls
  2. Bucket
  3. Water

Gel ball / water ratio:

  • 10,000 pack / 4L water
  • 5,000 pack / 2L water
  • 500 pack / 200ml water


Step 1: Empty gel ball pack into bucket.

Step 2: Fill bucket with water (more is better).

Step 3: Allow gel balls to soak for 6 hours minimum! (Overnight recommended)

Your gel balls are now ready to use.

Storage: Up to 2 weeks in an airtight container away from sunlight. For best results, store in water and strain when needed.

7 reviews for JM M4A1 Gen 8.5 Nylon Gel Blaster

  1. Martin (verified owner)

    Absolutely awesome definitely better than what I was expecting

  2. Anh

    this doesnt have primer

  3. Beau

    Exactly as shown, works beautifully! Love it

  4. Nathan

    Unreal! Definitely reccomend

  5. Ethan Davey (verified owner)

    Beautiful first rifle! Defiantly recommend for anyone getting into gel blasters or those looking to expand their collection!

  6. William

    Best gel gun i have,fully customizable i have fully upgraded mine and i believe it’s unbeatable A++++

  7. Sean

    A Reliable, hard-hitting-straight from the box blaster.

    Worth the purchase!
    a well weighted go-to

    Cheers Renegade!!

Add a review