Inld. type 2 stock marking ???

[gunsdora]

Hi
Could use some help. I have a type 2 Inld. stock. There is some letters on the right side of the stock that I have never seen on a M1 carbine stock. MRT Would any one know what that is for. Thanks for any help.

Information

Warning: This is a relatively older thread This discussion is older than 360 days. Some information contained in it may no longer be current.