Mystery part sort of quiz to identify this part

[RCS]

I found this case hardened magazine follower for the WW2 BAR magazines. I sent the late James Ballou a photo, he said that Seymour thought that a harder follower would improve feeding. It really did not offer any improvement and these followers still are found in rebuilt magazines.

Also of interest is the first bipod adopted for the BAR Model 1918A1 in 1937, these are quite rare to find. These bipods were in use during the early years of WW2 until the Model 1918A2 became availableAttachment 79644Attachment 79645Attachment 79646

Information

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[Lee Enfield]

I found this case hardened magazine follower for the WW2 BAR magazines. I sent the late James Ballou a photo, he said that Seymour thought that a harder follower would improve feeding. It really did not offer any improvement and these followers still are found in rebuilt magazines.

Also of interest is the first bipod adopted for the BAR Model 1918A1 in 1937, these are quite rare to find. These bipods were in use during the early years of WW2 until the Model 1918A2 became availableAttachment 79644Attachment 79645Attachment 79646

How close is the 1937 bipod to the R75 version?

[RCS]

The Colt R75 was for commercial sales but some did end-up in military service

The Model 1918A1 bipod has drawing numbers on most parts like many US military rifles did during the late 1930's. The locking mechanism is different on the legs, which can also telescope and lock. Each leg foot is much thicker too. Attachment 79647