Metallurgica Bresciana Gia Tempini
Bodeo “short” with barrel replaced by another length, probably in Germany (mark of 1965 - Ulm)
On the right the logo of “Tempini” with the year of manufacture 1921 and the punch CA of the controller.
The serial number is official (perhaps service of Administrative Police force, because the short model was never distributed to the Army)
Albert