These were my unicorns for awhile.
Ruger MK678 U.S. two digit serial number in original packaging. About two dozen or so in civilian's hands.
Ruger KMK512B. This one was part of an 84 gun overrun that was made for the Navy Seals. It is a black phosphate coating over a SS gun. All parts even grip medallion blacked out. Special front sight made for slip over suppressor.
Ruger MK678 U.S. two digit serial number in original packaging. About two dozen or so in civilian's hands.
Ruger KMK512B. This one was part of an 84 gun overrun that was made for the Navy Seals. It is a black phosphate coating over a SS gun. All parts even grip medallion blacked out. Special front sight made for slip over suppressor.