I am trying different ways to write reviews. If you have any suggestions, please feel free to let me know, and I will continue to learn and improve. Today’s review is of the CYMA M4-CQB.
Dimensions, Weight, and specifications :
-
Length:
79 cm (Fully Extended) -
Weight:
1.88 kg (only Blaster) -
Colours:
Black and Tan -
Battery:
XT30 (Standard configuration, can accommodate an 11.1V battery.) -
Gearbox:
Unique V2 gearbox featuring a chamber positioned in the mid-magwell. -
Features:
ESHOOTER red kestrel fire control system (gearbox upgrade with metal full threading, bearing bushing, bolt handle linkage ejector window/casing action), features magazine pre-load, metal gears, empty gear, and programmable functionality. -
Material:
Durable nylon body with metal components （internal and external barrel, tail top mount, trigger, charging handle, receiver cover, front sling mount, weight compensator, rear sling mount, telescoping stock core, sear, metal gear）
External Features:
-
Barrel：
Included is an hop-up that allows for diy , with both the inner and outer barrels made of metal. -
Rail：
2 short top rail, 2 short side rails and 1 bottom rail -
Stock:
extendable, The battery compartment is located inside the stock (battery compartment length 15.4 cm). -
Markings:
Directly UV print on the body (not laser-etched, many Chinese players have complained about this)
Thoughts:
The JD-100-3 M4-CQB version is really fun to play with. Its fire control system is extremely satisfying, and the overall manufacturing quality is also outstanding. Compared with the 2024 JD-100-2 version of the same brand, the JD-100-3 M4-CQB version undoubtedly offers a better out-of-the-box experience and manufacturing quality: it has upgraded from the fire control-free design of the JD-100-2 version to the latest ESHOOTER red kestrel fire control system. This fire control system can make the electric blaster more intelligent, reliable, and faster in response speed. At the same time, the shooting parameters of the electric blaster can be customized through programming, which is truly an amazing feature. In addition, the JD-100-3 M4-CQB version has added the action of the charging handle linking the ejection port and the magazine catch.
If you want to upgrade this gel blaster—for example, by replacing its receiver and gearbox with those from another brand (such as LDT)—you need to polish the receiver and gearbox of the other brand.
The airtightness of this blaster is not very good (CYMA intentionally made the airtightness poor, possibly to avoid exceeding the speed limit and violating regulations). If you want to upgrade the cylinder, after disassembling the cylinder, wrap it with raw tape and apply some airtight grease, and the performance score can be improved. The workload of the upgrade is moderate, but it has relatively high technical requirements.
In addition, CYMA’s magazine well is still relatively small compared to magazines of other brands. For instance, when using JINGJI magazines, although they can feed ammunition, they will be very tight, so this matching is not highly recommended.
Warm reminder: The water in the gel balls of the CYMA M4 fire control version must be drained thoroughly; otherwise, it may easily cause the pre-feeding function to fail. If the pre-feeding function fails, place the magazine and the body on the table to dry for a while, and it will return to normal. In addition, you must remember to remove the battery after playing; otherwise, it may easily cause the fire control system to burn out (this is a common issue with fire control systems).
Here are some photos I have taken. I hope this review is helpful to you. What do you think about this m4? Any upgrade ideas? Let’s chat in the comments!
