VSR10 true TDC for ActionArmy hopup unit

Design is meant to make red Action Army hopup chamber for VSR10 true TDC design. You have to remove hopup arm from chamber, keep the swing pin. You will also need M3 nut which you put in marked area on picture. Insert is keept in place on one side with stock M3 screw and previoslly mentioned M3 nut and on other side with stock dowel pin.
On my settings of the printer nub fits really well, tight but not stiff. If nub comes little stiff just file it little to fit it but nub have to travel up and down nice and smooth.
With this setup I'm playing now for 2 years with my VSR10 on 3.4J with 0,45g BB-s and shots are like 70m straight. I also recoment making TDC turret taken from old scope which is micrometer adjustable.