the early ones did along with a stronger lever my 64 came with an adj piston but my 67 was a fixed one till i made it adjustable (fps readings are for the 67 one but my 64 is near enough the same )
they can be scoped easily by using a Mac1 style mount but i have some brass rails made to solder onto the barrel that one day i'll fit so pistol scopes can be used in the scout position