Landwarrior Airsoft got a new delivery from the PTS Syndicate in the form of the PTS Centurion Arms CM4 C4-10 which got the ERG system made by KWA... "Now in stock at LWA, the new PTS Centurion Arms CM4 C4-10 Electric Recoil rifle. If you are looking for a rifle with close to real steel operation, such as recoil, stop on empty, and a working bolt release then look no further!