PMKIII4 (RUGER MODEL 10138)
.22 cal., 4 3/4 in. tapered blue barrel. Known SN range 228-99835 to 271-43595. Unknown quantity mfg. for Ruger's TALO group of distributors from 2009-2010. Williams Shooter Supply also received a total of 669 models from 2009-2011.