KWA PTS Centurion Arms CM4 ERG green dot Specifically fits in the 4

Specifically fits in the 4

One-piece upper receiver

14mm CCW threaded outer barrel with thread protector

Will fit in the KJW M700 rifle as well

strong motor AEG type for airsoft guns

KWA PTS Centurion Arms CM4 ERG green dot Specifically fits in the 4Description: The PTS Centurion Arms CM4 C4 10 ERG airsoft gun uses an ERG (Electric Recoil Gun) system that is based on the latest generation KWA AEG 3 system. The ERG simulates recoil via a proprietary Kinetic Feedback System. When used with the proprietary ERG magazine, that is switchable between 30 or 120 round capacity, it is capable of an electrical auto cut off when the last round is fired. If you are willing to forgo the cut off, the ERG can