Had this in my stock G&G GR-16 Carbine. I was running it on a 9.6v 1600mAh Intellect mini battery. Rate of fire was satisfying. I was getting 27 bb's per second out of this motor! If you are wondering which magazines work best for this gun with its rate of fire, I recommend the G&G m4/m16 mid caps or the MAG m4/m16 mid caps. The only bad thing about this motor is that it burned out on me after only 1 year of play and around ~8,000 rounds put threw it. I could have just gotten a bad motor but none the less it work flawlessly for that 1 year.
-Great rpm with 9.6v battery
-Great Pinion Gear
-Does not over heat like clone motors
-Great build quality
-No real cons for this motor besides that mine broke after only 1 year of use, none the less an absolutely great motor
Rating: [5 of 5 Stars!]