i have a bsa 30CP how do i mount it to my 22a do i need more than what came with it if so is there a red dot that will mount easily thanks for the help ...Mike

Welcome to the forum. Smith and Wesson 22a? I'm not 100% familiar with that gun. Does the top of the receiver have grooves about 3/8" of an inch apart, parallel to the bore? If so that would indicate the usual .22 rimfire rings.

If it already has a base, then odds are it is for a Weaver-style rings. If there outside edges of the base are somewhat triangular in profile, and there are cross-slots cut in it, that would probably be for standard Weaver-style rings.

If not, then you have to find a base that fits it, and rings to fit the base. If it needs a base then there should be several screw holes through the top of the receiver. They may be filled with plug screws (screws with no heads and a tiny slot to remove them).

Pictures might help.

The S&W 22A has an integral rib for mounting weaver style rings, the rib runs basically the entire length of the receiver/barrel.
I haven't put a scope on mine yet, but as my eyesight isn't getting better as the years go by it may come to that.

i have a bsa 30CP how do i mount it to my 22a do i need more than what came with it if so is there a red dot that will mount easily thanks for the help ...Mike

If your red dot has the intergal base like mine, I had to cut it with a dremel tool on the right side to get it to work. It was the only way to mount it to my 22a and not have to buy a scope that used a ring setup.

just wanted to thank the 3 guys for the help on this ....Mike