...or is it just me?

Yes, I know the .380 round is shorter than .22LR round so conversion kits would not even work.

I love my Beretta Bobcat/21a but I would like a more modern, lighter/ploymer semiauto that has a real extractor and with the same approximate size, if not thinner. Put an adjustable rear sight on it please.

I would also want the option of buying a separate, threaded barrel like what is done now with the SR22.

Are there any other inexpensive alternatives out there?