WRA 2322225 (oct 1943) WRA 2408884 (mar 1944) Your'si is some were in between my guess 1944 as it only @ 4000 from the 44 and almost 87000 from the 43. Does your M1icon have a Sa barrel dated 50 or 51? though salvaged WWII barrels were used some. It would have been replaced if worn beyond army standards. Info and picture page 117 of Bruce Canfields Complete Guide to M1 Garand and the M1 Carbine.