Savage No.4's selected for sniper conversion weren't marked TR as original so it had to be done during FTR. The TR stamp was a selection mark that came into being during production for standard BSA service rifles that shot above average during the range testing. Those rifles so marked were then shipped to Holland and Holland for conversion to No.4T. Very early examples from BSA, Savage, Fazakerley and Maltby up until 1943 seldom have those markings present. At some point in 1943, markings became standardized along with BSA becoming the only supplier of rifles for conversion.