I am selling my ECHO1 M4 and CA33E. The M4 has a plastic body and the internals are stock. I have added a 7 1/2" suppressor (~$40). Only used once for about a couple hours. Needed a more durable gun so I got the full metal CA33E and added a systema 6.04mm tightbore barrel and a mini silencer. Also used this gun once for a day. I just didn't like the "G" series gun as much as I thought so I am selling it. Both guns are in great condition except the stock on the CA33E was broken when i got it. It is currently $60 to replace.
M4 --- Bought for $150 ---- Selling for $110
CA33E --- Bought for $265 ---- Selling for $200