Maple Leaf full steel cylinder set and trigger sears for vsr (m150)

New complete power up full kit with stell CNC trigger parts
steel polished surface with better pressure and less friction
to install instead of the original aluminum part

parts included:
-steel cylinder
-steel/aluminum piston
-metal spring guide
-steel silenced cylinder head
-m150 steel armonic spring (2.2J)
-re-designed steel cylinder sear
-steel piston sear
-steel trigger sear

for marui vsr10/gspec and compatible