I have owned the CM045A for several years now, and it has been a great little shooter. It isn't as accurate as some other AEG's I have used in the past, but it does well enough as a mid-range/CQB rifle. Due to its small size, the CM045A is a pleasure to use when running and gunning in a closed in or obstructed environment. The main negatives I have found both involve the battery-hatch area of the gun. Firstly, the rear iron sight is welded on at an angle, rendering the sights unusable. I understand that this is a common factory error on this model. The second issue is the spring pin that keeps the battery hatch closed popped loose during a game. I now have to keep it shut with an industrial rubber band.
Feels great and has a nice balance.
A reliable shooter.
Great battery life.
If target is over 80-100ft away, accuracy becomes an issue.
The rear sight is welded on off-canter. Makes iron sights useless.
Shoddy battery hatch button