The 9th La, was assigned to the 1st Louisiana Brigade, ANV. There were no formal sharpshooter battalions/units in this Brigade. Reading of Dr Bergeron's book, indicates there was only one Sharpshooter Battalion, made up of Louisiana Troops, the 14th Battalion. They were out west (AOT).
Please note, there is a book dealing with sharpshooters that recently came out, sorry can not remember name of book.

JIM T