As to get a M1A in thirty-06, I don't think There was 1 produced in advance of. Having said that, the M1 Garand went by some experimentation immediately after WWII (and I feel even a little bit through the war) to include a detachable mag, which was the basis on https://federal30-06form1garandne36061.mybloglicious.com/38985421/fascination-about-federal-30-06-for-m1-garand-near-me