The M9 is a lightweight, semi-automatic pistol manufactured by Beretta and designed to replace the M1911A1 .45 caliber pistol and .38 caliber revolvers. The Beretta M9 has redundant automatic ...
To improve patterning the A400 has a barrel bored slightly larger than the nominal .729 of the 12 gauge and a lengthened taper from chamber to main bore. Beretta added a raised rib to this version ...