I'm looking to order a red dot sight for my S&W .22A1 pistol and I just read on another topic:
Heads UP! Red Dot Scope for S&W 22A-1

That I need a weaver style base and I'm just scared of ordering something that will be sent back so can somebody help me with links, information whatever on what sight I should put on this gun?

I used a Nikon Monarch Red Dot Reflex site on the 22A-1.The mount is adjustable to fit the 22-A rail with no problem.
Another less expensive choice is the Millettt Red Dot Sight that also works with this pistol.

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JR

I have a Burris fastfire 2 on mine.
works good

A got a Truglo reflex red dot and it has the built in Weaver base attachment that works fine with my 22a-1.