The Star BM is like a mini 1911 in 9 mm Luger/ parabellium. The smaller pistol I know of to me is the cz50 or cz70 in 32acp. Are you looking for a small carry or a ankle holstered backup? Another small pistol is the cz82’s/83 in 9 mm mak. There is a cz83 in 380acp. I like the double action first shot on the cz pistols.

Cz50
cz50 - Google Search

Cz70
cz70 - Google Search

Cz82’s czech military surplus
File:CZ 82 IMG 1785 noBg.jpg - Wikimedia Commons

Cz83
cz83 - Google Search

Star BM
star bm - Google Search

For a smaller revolver there’s a H&R 22 lr.
https://upload.wikimedia.org/wikiped...7131674%29.jpg

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