The Tremors M4 recoil action will be available from Modify before 13th February (when their Chinese New Year holiday begins):
Here is the installation video for the last TREMORS video.
TREMORS M4 Recoil Action will be available before February 13
Modify TREMORS M4 Recoil Action M4 impact jolt is realistic. You can feel the difference in the first time you shoot it.
(Modify)
