James Bond (Pierce Brosnan) bungee-jumps off the top of a tall
dam, and once at the bottom- but before he can rebound- he fires a
down toward the structure, which anchors him in place. The winch on the back of the gun then pulls him down where he
disconnects the bungee cord.
The gun is a lightly modifed W'Orr Game Products Ranger
, changed only by a shortened barrel, the addition of a muzzle bell, the "winch" and
what's probably an Aimpoint red-dot sight. Note where the name of the gun was milled off the side of the rail.
Bond then uses a laser mounted in the red-dot sight to cut his way into an access tunnel.