If I understand that the type E kicked in during 1969.
The features of the rifle suggest 1969, reading Internet "gospel." I would assume that features would transition through production?
The upper has a roll pinned front swivel, C MP C barrel, and unmarked FSB with flashing removed, features found in 1968 (and/or earlier), but pretty much unheard of in 1970?. The handguard have drain holes, but are not marked L and R.
The square forged receiver is also cool.
I'm content with the late type D stock that came with the kit… I'm going to use it.
Of course, it is a parts kit… as Pro2ndAm suggested, the stock could have come from another rifle.
Maybe I'm a dork, but I find this interesting…. or maybe I'm "Pushing too Hard," reminiscent of some of old man hippie music.
I find that funny, considering how anal retentive some of the retro guys can get (which I appreciate).