Custom ssg has no base it’s just put together off the top of my head rn here is the parts list
Jag arms body serial number 3 
Centurion arms gen 2 rails 
Zci pistol grip 
Mft stock
Retro arms fire selector 
Prowin hop up
Tbb
Prommy bucking 
Don’t remember what gb shell I put into it I’ll check if you’re interested 
Lonex compression set up and piston 
Shs 12:1 gears 
Lonex or g&p trigger contacts can’t remember
Retro arms trigger 
M115 spring ball bearing spring guide 
Can’t remember what motor off the top of my head rn but I’ll check
Aim sport short dot 
Afg and mbus sights
$475 shipped and with pay pal feels 
$450 picked up 