KWA PTS Centurion Arms CM4 ERG green dot One piece metal hop up

One piece metal hop up

Do not put on real guns as they will explode

14mm CCW threaded outer barrel with thread protector

One-piece upper receiver

The main advantage of this setup is having a TON more stability with each leg being on its side rails

KWA PTS Centurion Arms CM4 ERG green dot One piece metal hop upDescription: 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