I bought a new M77 Mk II in 7.62x39 (Davidson's Exclusive) back in the 80's that served me well for 20+ yrs. I would still own it, but went the
.45 cal cast boolit route in my rifles & never looked back.
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That would have been in the early 90's... Ruger did not make any stainless Mark II rifles in the 80's. I had three of the Davidson's 7.62X39's and they were all very accurate... all are now owned by other CGN members.