When the type 3 band first came out it was used only on the M1A1and as production of them increased it was then used on all carbines. But the the type 3 band was in use in November 1944 for sure and may have started in October 1944.
When the type 3 band first came out it was used only on the M1A1and as production of them increased it was then used on all carbines. But the the type 3 band was in use in November 1944 for sure and may have started in October 1944.