[Vaquero]

the original AR was the AR 10 a larger .308 version of the AR 15.

[smoothsailing]

...........

As far as individual guns go, Of the original Armalite Hollywood prototypes, S/N 1 and 2 definitely had the top handle, but S/N 4 had the charging handle in the typical location.

S/N 1 was much more similar to the early AR-10's than any other AR15 ever built. S/N 4 is essentially the design that went into production.


S/N 1


S/N 1 is 2nd from top, S/N 4 is 3rd from top.

Source