I have to say it, even though I wrote up a three paragraph follow-up to this post and at the last second zapped it for changing my mind. The reason was, I really don't like to bash, but I see this now as a heads up for others.
MK Arms made junk, pure and simple.
I thought that since it was an S&W design, it would be good, I was wrong.
They cloned a design not even as well as Iver Johnson and Universal cloned the M-1 carbine.
-Misaligned trunions (depends on the day it was built)
-Bolt metallurgy is questionable as the bottom lip likes to crack and bend
-Extractor likes to fall apart which seems like not only metallurgy, but the design of it sucks
-Their factory mags have to be fitted to each gun (pathetic)
-Reliability depends on the day it was built
-The sear likes to wear fast
-Bad trigger pull
-If the sights are off, sucks to be you
If you got one built in 86, you are almost guaranteed you landed a turd.
I sometimes wonder if the gunsmiths at MK Arms landed jobs at CAI.
I have owned a number of these in FA and none of them worked as advertised.The are an extremely poor copy of a S&W 76, which also was a poor copy of a Swedish K.