When I recieved my M89 UMG I was excited to go toy with it outside shooting at targets, rather just had a it chronoed up to 350 FPS and with the rate of fire with the stock battery you might as well go buy the custom UMG battery or a 9.6 Intellect its worth the money and your battery life. I recommend also buying a bigger magazine the UMG came with a 250-300 round mag I'm not sure exactly but it tends to run our quickly. It Does NOT double feed with the G&G UMG Magazine. You just need to make sure your selector switch is set to Full-Auto or Semi-Auto Not Half way inbetween thats why you would get a double feed. Otherwise Its a Great secondary weapon and Good for the Field or CQB.
No Trouble Loading with Spin Wheel
Good Rail System
Compact yet Has a Good Range of about 120-150 Feet
Overall look well done for a Clone
Paint Finish comes off easily on Hop up selector Slide
Stock Hard to get open sometimes when its folded in on the rubber. Otherwise a must buy for anyone looking for a good clone at a steal of a price.
Rating: [4 of 5 Stars!]