Henry,
The bolt buffer was added sometime later, about the time the safety was moved rearward if my memory serves me correctly @ 1929.
Does your gun have a buttplate or recoil pad?
If a buttplate, what style?
Also, is the patent address on the barrel or the left side of the receiver?
Trying to ascertain when some of the styling changes were made.
Thanks for your help,
Will Gurton