Kevin: I have the exact same Drilling regarding the trap door buttplate...stuff..I have the
.22 rifle insert & all else is the same...except I lack the .22 rifle tool to use on the
insert...would you be so kind as to send me a few photos of the insert tool?
My personal email is: bisonland@bresnan.net The engraving on my rifle is different...
& it was made in 1938...

Thanks,

Tom from Cody, Wyoming