MARK II MK678GC (RUGER MODEL 0178)
.22 LR cal., Blue Government Competition, 6 7/8 in. slabside barrel. Known SN range of 218-62413 to 218-69307 - total of 991 shipped in 1996 to Go Sportsmen (MN). 739 shipped from 2002-2003 to Big Rock Sports distributors - Henry's (NC), CS...