I'm actually somewhat disappointed in the quality KJW. I own a cansoft KJW m9 and in about two months or so, the piston broke because it's made of pot metal. I can't find a darn replacement anywhere too.
World record in propane sniffing.
-Tokyo Marui M4 MWS GBBR
-ICS CXP M4
-KJW KP07 (1911 MEU)