In reply to:

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Now which trigger?
I have one spotted with the single,and one
with double.
Do all these rifles have ejectors,etc..

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All the Beretta double rifles that I've seen have had ejectors.

Regarding triggers it really depends on what you are used to using.

This will maybe piss off the traditionalists, but, especially when dealing with non dangerous game rifles, a quality single trigger is WAY better than 2 triggers IMO!