
DRAG ADJUSTMENT (PANNING)
Opposite the locking pin, you will nd the Drag Adjustment Knob. The Reaper Rail is designed to
enhance engagements with stationary targets as well as tracking moving targets. As such, the horizontal
pan was not designed to completely lock down. The drag adjustment knob is constructed of a nylon tip to
create a smooth horizontal pan that can increase or decrease the resistance of the horizontal motion. Do
not overtighten the drag knob. By doing so, it could damage your Reaper Rail.
REVERSE HANDING FOR LEFT HANDED SHOOTERS
The Reaper Rail is shipped in a right-handed shooter orientation. For left-handed shooters, simply
remove the 4 allen screws from the grip’s control handle assembly by using a 5/32” allen wrench. Next
remove the 4 screws that secure the Rail Clamp to the Direct Mount Plate. Flip the mount plate upside
down and transfer it to the left side of the Saddle Clamp and reinstall the screws and allen screws.
SECURING A STOCK OR CHASSIS IN THE RAIL
To secure a stock or chassis in the Reaper Rail, set the rearm’s
Arca Swiss or Picatinny rail section into the rail clamp and tighten
the tension knob located on the side of the clamp until the rearm
is secure.
CANT ADJUSTMENT
The Reaper Rail includes cant adjustment. In long-range shooting
cant affects point-of-impact (POI); in fact, more extreme angles
of cant, as well as longer distance shooting, especially extreme
distances, produces signicant POI shift—just 1° of cant may result
in a 6” POI shift at 1,000 yards. For this reason, the Reaper Rail includes 22° of cant adjustment (11°
in each direction). For proper cant adjustment, you should have a cant indicator (most often a bubble
level attachment) correctly attached to your stock, optic mount or the optic itself.
To adjust cant, loosen the cant adjustment knob. Rotate your rearm clockwise (right) or
counterclockwise (left) on the cant swivel until your cant indicator bubble is centered. Holding the rie
steady, tighten the cant adjustment knob. Check for cant again and adjust if necessary. You may also
choose to shoot with the cant adjustment knob slightly loosened to allow for on-the-y cant adjustments.
WARNING
Before handling the Reaper Grip, read and understand the contents of your bipod’s manual, and the
Kopfjäger Reaper Grip manual. Follow all standard safety precautions and procedures during use.