Unfortunately, there are not a lot of pics of the original M109 that show the interior differences. There was an AMPS Boresight issue a few months ago that showed a build of one and the details needed to backdate the old Traks M109A2 interior set into an M109.
Here is an old Army movie that shows it well though:
It shows the old-style rammer well.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
Check out my Gallery: https://app.photobucket.com/u/HeavyArty
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell