Here is my Mk 12 Mod 1. All Im really feeling I need is probably a different grip and I'm done.
CA Base
Systema M120 Spring
Systema Piston and piston head
Systema Bucking
Mad Bull 6.03mm Tightbore cut down from M16 to SPR length
9.6v 3300 MAH Battery
KA Mk 12 barrel
KA QD Bi Pod mount and sling mount
Rock Mount 6-9" Bi Pod
ACOG Red dot and some OE Tech 3 pt sling which isnt pictured.
Sorry for crappy pic, its late, Ill post better tomorrow in daylight if anyone wants.