The PTS Magpul Masada ERG (recoil) is still in the market though we do not know who has this in stock. The Frog Airsoft spots this at the PTS Syndicate booth at the SHOT Show 2018, though he mentions there is no ETA yet which means it will be back in stock this year. The ERG is a the tech from KWA which also produces some of the PTS airsoft rifles.