We have seven or eight DRMO M-14's. Each went through various permutations as recounted by others, usually by whatever supervisor was visited by the good idea fairy at the time. There are a couple with Troy MBR chassis, a couple with some other version, a couple of red-dots, a couple of magnified optics. Finally, the major in charge of SWAT decided he wanted them all for "man tracker" guns, whatever the heck that meant. Never been so glad to issue a bunch of stuff out of the armory and wish them luck on their "man tracking".
We had an OIS where we had a deputy die in the line of duty. SWAT was armed with MP5's at the time, and the killer stood them off in a prepared hide with a Mini-14. Two other officers were injured. Finally, the SWAT team from the county to the south of us rolled in with a M113 and G-3's and "attempted to apprehend" the individual. They were unsuccessful in apprehending him, but very successful in stopping him from creating more carbon dioxide. After that, there was a big push in the agency to "gun up". SWAT went to .45 Glocks, Colt M4's, and Benellis of some variety. Patrol got .357 Sigs, DRMO M-16's, and everyone had to have a shotgun in the car. I see why SWAT wants 7.62x51's, but I'm thinking there are lots of better options.