I've heard that Evike can sometimes give you a Well Mb03 rifle when you order a bar-10, instead of an actual JG bar-10.
The Pro-Sniper on Evike is called 'JG CSI BAR-10 VSR-10 Full Size Tokyo Marui Clone Airsoft Sniper Rifle'
The G-Spec on Evike is called 'JG BAR-10 G-SPEC Marui Clone Airsoft Sniper Rifle'
Do CSI also import the Well clones?
Anyway, yes, CSI is the import brand and JG is the company.