To be honest I'm not entirely sure.
It's probably a faster stock and rear grip with a sharkfin underbarel and cronen mini with a decent muzzle.
I'm pretty sure I never ran a mag, ammo type or barrel change or a laser.
Wish I could be more helpful.
Next time I go on I will try and rebuild a Sakin.
My first attempt will probably be close, I would imagine how I would normally build it. 😂