Well there should be a knob somewhere on the scope with which you can turn it on (depending on what kind of RDS it is it could be either on the top or the right hand side). This knob should have either numbers or on/off.
Sometimes, if not most times, the front of the RDS is tinted (red, green, etc).
As for battery, it all depends on what kind of RDS you have. Pictures would be helpful.
Sweet, post count is at .223
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Last edited by Fly 9; September 9th, 2008 at 00:06..
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