13,500 units of the gun were delivered to the Italian Army, as well as the 13th "Aquileia" Target Acquisition Group (Gr.Ac.O.)

In 1962 it was supplied to the COMSUBIN of the Italian Navy, but shortly afterwards it was replaced with the Beretta PM 12.

10,000 copies of the weapon were also purchased by the Portuguese Army which used it in the wars in Angola, Guinea-Bissau, Mozambique and the Democratic Republic of Congo in the years immediately following independence from Belgium.

Most parts are made of stampings and pressings, and the two sides of the gun are one piece each, joined by a long seam.

The tubular butt folds to the right side of the receiver, and the pistol grip is made entirely of steel.