Quote Originally Posted by Ridolpho View Post
5thbatt: So it would appear that after the change to the spring washer initially the old brass pin/ screw was relied on to stop the rear of the forend from spreading. My '39 MkIII (type 2) has the flat strap so somewhere between yours and mine they made the change.

Ridolpho
Ridolpho, it was later than 1939, my 1945 is the same as the '27
I dont know what year they changed, but i'm sure someone will be able to tell us.