Red Dot scope
 

BSA RD30 scope. This was used for one season on my sons .243 rifle. I have since put on a new scope. Needs to go.
$22 shipped in US.
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From the BSA web site:

The BSA Multi-Purpose Sighting Systems are a wonderful light weight sight for close quarter and medium range targets. Light enough for small calibers plicking on the range, yet durable enough for larger calibers used by hunters and law enforcement departments.
FEATURES:
• 5/8 Weaver style attachment.
• 11 position rheostat.
• 5 MOA.