MARK II 22/45 P678GC (RUGER MODEL 0196)
.22 LR cal., 6 7/8 in. blue slabside barrel. Known SN range of 220-81088 to 226-16902. Many thousands made for Davidson's from 1996-2004, which includes 525 pistols with 220-prefix, 424 pistols with 218-prefix (SN example 218-78570), and th...