I have 2 of them I purchased brand new..back in the early 80's, if I remember correctly. I bought the 2 3/4" & 6" barrel lengths. Wish I'd sprung for a 4" as well. They were being sold @ close-out prices, as Ruger was introducing the GP 100 as it's replacement. What wasn't publicised was why. The Security Six was a strong, well designed, reliable & accurate pistol. Ruger sold a lot of them.
They were issued firearms for many police department & other law enforcement agencies. I recall Ruger replaced them as production costs were too high , narrowing their profit margin.The GP 100 & later, SP100 were designed to be manufactured faster & easier (= cheaper)
A friend with a FFL license ordered them from a distributor that was "blowing them out".. don't want to mention price paid, as it'll be too upsetting, but I bought both for less than a similar single S&W cost @ the time.
A college classmate was practicing his pistol smithing skills @ the time & offered to do a trigger job for me.I gave him the 6" & It has one of the
nicest trigger pulls of any of the hanguns I own..It breaks @ 3# & is very smooth...'course it's had more of my handloads through it than any other pistol I've owned..that might've smoothed it out some too.
I agree neither the GP-100 or SP-100 is close to being what a Security Six is.. & that's why the prices continue to rise for them..if you can find one for sale..Won't be mine..
