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Cautions and Warnings
Make sure the firearm is unloaded before mounting the optic. Do not look through
the sight directly into the sun, light arcs, or other very high-intensity light sources.
Keep away from children.
Battery Installation
The FastFire 4 operates with one commercially available 3V Lithium battery
(CR1632). Do not attempt to substitute two CR2016 batteries.
To insert or replace the bat-
tery, unscrew the battery
cap on the top of the sight
using the special combina-
tion screwdriver included.
Make sure that the
positive pole of the battery
is facing up.
Replace the battery cap,
but do not over tighten.
Keeping the battery contact
surfaces clean will ensure reliable operation.
Installation
Installation on most rifles, carbines, and some handguns requires the
included Picatinny/ Weaver Mounting Plate. Most other
handguns, shotguns and rifles require a different
mounting plate. To determine the correct mount
for your firearm, go to: https://www.burrisoptics.
com/mounting-systems/mounts-and-bases/fast-
fire-mounts.
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Picatinny / Weaver Mount
To install the FastFire 4 on a Picatinny or Weaver-style base, loosen the clamp nut on
right side of the mount. Place the mount on the rail with the cross screw in the desired
slot. Check to be sure all the clamping edges are engaged. Keep a little pressure on
the sight toward the muzzle as you tighten the clamp nut to approximately 20 in-lbs.
Operating Procedure
Elevation and Windage Adjustment
There are separate adjustment screws for elevation
and windage. The elevation adjustment
screw is located on the top of the sight,
and the windage screw is located
on the right side. The windage
adjustment mechanism has limit
stops at both ends. Screwing either
adjustment into a stop will lock
motion of the other adjustment.
Summary of Contents for FastFire 4
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