Piston removal and rebuild

(x)
MOV (Source) 1280 x 720 288.6 MB
MP4 (360p) 640 x 360 11.16 MB
MP4 (480p) 854 x 480 20.77 MB
MP4 (720p) 1280 x 720 67.32 MB
WEBM 854 x 480 21.4 MB