According to the serial number, it was made in 1966. (Post '64. )
I am wanting to buy some better iron sights for it and many sites distinguish between Model 94 and Model 94 carbine.

I don't want to buy the wrong thing. It has a 20" barrel.
Also says it "Must have Ramped Front Sight". I know the front and rear sights are mounted in3/8" dovetails.

What have I got? And is it a Model 94 Carbine?