interesting receiver production in 1940

[RCS]

Attachment 67092

After Springfield adopted the revision 4 follower with later slide in mid 1940, it continued in to 1941.

Winchester started production with the un-marked revision 2, then their own variation of 45 degree front and back slide and then the short nose slide which continued into the war years. There were three different slide variations used by Winchester in 1941 as shown in this photo.