We have not installed one yet.. I have just sent in info card from an Automotive Industry mag. to obtain tech. info and pricing.. Do not need one , however I don't have on either.. Really will be driven by the cost and quality. We sell night vision scopes , the quality varies greatly and cost run from $200.00 to $10,000.. Will be interesting to see pricing of the H2 unit.
Mike
POPGUNS Inc.
www.popguns.com