Phil Pilkington has a nice IR home training system. Oehler has an acoustic screen for its chronograph system downrange where the sky screen window gets to be too small.
If you want an Olympic/ISSF style remote scoring system I'd shop carefully. Somehow I doubt that's what you mean?
Try
SIUS AG
CH-8307 Effretikon
+4152 3439191
http:
www.sius.com
but this may be way out of date - probably helps to speak Swiss German too.