When the first Model 92 pistols were tried out by the Navy Seals they were having a problem with the slides flying off the frame. Mickey Finn, designer and developer of the M9 bayonet and designer of the Buckmaster knife, developed a beefed up slide for the Beretta 92. The side of the slide is marked U.S.N. and has the Phrobis dolphin logo. They didn't make too many of these before Beretta modified their slide to correct the problem. Airsoft makes a reproduction of this pistol. There are also fake copies of the slide out there for unsuspecting buyers.
http://yarchive.net/gun/pistol/beretta92.html
________
universal health