Maple Leaf full steel cylinder for vsr sniper rifle (m135)

New complete power up full kit with hi quality 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
-Ball bearing spring guide
-Steel silenced cylinder head
-M135 steel armonic spring (1.8J)

for marui vsr10/gspec and compatible air cocking rifles