This trigger unit and dedicated piston set is built for the Tokyo Marui Bolt Action VSR-10 series of rifles. This new trigger unit utilizes the proven PSS series of previous trigger systems and improves upon it. A new safety mechanism has been added, not present in previous PSS series triggers.
Before use, please remove the silent shaft (it is a screw in the piston head) and replace it with the included set screw. Please use the included screw lock to prevent loosening. The Silent Shaft is most effective for PSS 120sp springs and below. The Silent Shaft is less effective for 130sp spring and higher, velocity will be adversely affected.