Burris XT-120 - Manual (Page 18)

BULB REPLACEMENT
With the XT-120 detached
from the firearm, turn the bezel
counterclockwise
until it
comes free from the retaining
threads. Remove the old bulb
as shown and insert a new
bulb in its place. Replace the
bezel by carefully pushing
down and rotating the bezel
clockwise making sure that
threads are engaged properly
to prevent stripping the threads.
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