John Garand's M1E8 design was WAY better than the M1E7 with G&H custom fit mount, but the E7 was chosen and adopted as the M1C. Seven years later in 1951 Ordnance abandoned it and gave SA an emergency order for 15,000 M1D's. It's pretty clear to me that G&H needed the war work and got it through political influence. I said so in a GCA
Journal article titled "M1C -- Was the Fix In?" in the Spring 2013 issue. Garand's M1D lasted almost 40 years.