Solink Motor Slim Brushless Motor for Airsoft AEG Rifles
(Model: High Torque / 30K RPM)

"I got the 55,000 rpm version and installed it on my emg lancer systems L15 and it is awesome. The trigger response is way better and it has a scary high rps. Just make sure you have a slim motor grip before installing. The only hassle was that the positive and negative ends were opposite from the ones on the stock motor so you do have to fiddle with the wiring to get it to work. I didn’t have to cut the wires to get it to fit though, so I was happy about that. I’ve had zero issues with it since installing it so I would say it’s reliable, but I haven’t owned it for very long so I can’t say for long term reliability. Hope this helps : )