CYMA Platinum M4 QBS Airsoft AEG Rifle (Model: 13" M-LOK / Gun Only)

"As of July 2025 these do have the upgraded metal rotary hopup which comes with a concave hop nub which is a good surprise. I highly recommend this as a base gun for an extremely snappy custom build or if you just want a great gun out of the box that needs no upgrades (but you should still put in a perun v2 anyways).

Current internal mods:
- Perun V2 hybrid
- EMG x Retro Arms flat trigger
- 4UAD bucking
- Madbull 6.03 inner barrel
- EMG "Max Performance" SP125 spring
- shimmed to _0.1mm side to side play

Using an 11.1V lipo and precocking, the trigger response is extremely quick and with proper shimming the gears are silent when firing outdoors. An unfortunate side effect of the 12 tooth sector gear is that it reduces the overall piston draw so with those mods it is only shooting 370fps with 0.2g. However, the gun is an absolute laser and I've been able to consistently hit 175-200ft shots during games. Planning to use an EMG brushless 24-39k motor in future.

Pros:
- very snappy already out of the box
- rotary hopup
- very high quality feel
- stock motor is pretty high torque
- deans connector

Extremely minor cons:
- handguard is only held in by 2 grub screws
- upper and lower receivers are very tight fit so reassembling can be tricky
- shimming could be better but did not sound bad out of the box

"Great gun so far! only problem is that one of the sling mount points keep falling off by unscrewing

"I can confirm, these now come with a WAY BETTER mosfet and a ROTARY HOP UP! As of June 2024.

Absolutely amazing. Extremely snappy trigger (I use 7.4v 2500mah deans lipo Matrix batteries), very high quality feel, very durable QD points, full metal body, and almost perfect shimming out the box. I was very torn over time deciding which new gun to pickup and this by far blew my expectations away.

Caution, that MLOK is sharp. USE GLOVES.

I can confirm the new batch of these are muchhhhhh better now.