Manurhin info, from their web site, here:

MANURHIN

Since 1998, The French company, Chapuis-Armes, is honored to produces and distribute the legendary Manurhin revolvers.

Since the beginning of the Manurhin adventure and as part of a continuous production improvement program, Chapuis-Armes has not ceased to invest in its production tool in order to modernize the procedures while maintaining the supply of the highest quality steel

Chapuis-Armes has now, a park of 5 axis CNC machine used to mechanize the frames, cylinder and barrels of each revolver.

These high-performance machining methods associated with three-dimensional metrological control enable a production quality that we have raised to the highest level of metallurgy standards.

Each MR73 and MR88 revolver is manually assembled and adjusted in the best tradition of high-grade gunsmithing.

By improving its production processes and the quality of manufactured revolvers, Chapuis-Armes facing an constant increasing demand, continues to promote through these Manurhin revolvers a legend of French armory’s heritage.

From the Beretta press release:

Beretta USA Launches Line of Manurhin Revolvers

Accokeek, MD (May, 2021) – Beretta USA is excited to announce the inclusion of Manurhin revolvers into our commercial product line-up. The official launch of this new line will take place this week at the 2021 USPSA LOCAP Nationals in Talladega, AL.

The French company Chapuis Armes, a world leader in hunting firearms, has manufactured, produced, and distributed the legendary Manurhin revolvers for nearly 20 years. These storied firearms benefit from the expertise and craftsmanship of Chapuis Armes’ gunsmiths for quality and finish. The full range of Manurhin revolvers fulfills the needs of target shooters and law enforcement officers worldwide.

The Manurhin MR73 series of revolvers were explicitly developed for the requirements of the French Gendarmerie and special service units of the French Police and Military. The pistols feature exceptional accuracy and proven reliability, tested with tens of thousands of rounds of full power .357 Mag ammunition during durability testing.

“Beretta is proud to have the opportunity to bring the best revolver in the world to the US market in cooperation with our sister company, Chapuis Armes – the parent company of Manurhin. These products are in keeping with our philosophy of producing the best offerings on the market, and we are excited to enter into the revolver market with such a storied brand and the renowned MR73 series specifically,” Erik Stern, Tactical and Pro-Shop Product Manager, said.