My old MK I Target model, circa 1982, which was the last year the MK I was produced, and an SR22 that was manufactured the first part of March, 2013. A bit different...
The MK I wasn't my first Ruger semi. I had a Ruger RST-4 that I purchased in 1972. It was stolen from my household goods when I transferred from Fort Hood back to Germany in 1976. I was pissed. I'm 100% positive that a guy by the name of Bobby Smith, who was one of the 2 guys who came to our quarters to pack our household goods, stole it. Long story. Suffice it to say that I shouldn't have allowed it to be packed in my household goods. My rifle made it to Germany just fine. Not the pistol. Live and learn.
Stay safe.