The bayonet lug equipped barrel bands were standardized in May of 1944. The mass production of M-4 carbine bayonets began after the termination of the production M-3 combat knives. With my recollection of the date of the switchover being in July of 1944. I’m sure that there were delays of both in getting into the hands of the troops.
In August of 1945 M-4 bayonet production itself was terminated. So while later wartime issue carbines had lugs installed at the factories. The earlier issue carbines were retrofitted with the lugs (sights etc.) when they went through any of the numerous rebuild programs after the war. FP
In August of 1945 M-4 bayonet production itself was terminated. So while later wartime issue carbines had lugs installed at the factories. The earlier issue carbines were retrofitted with the lugs (sights etc.) when they went through any of the numerous rebuild programs after the war. FP
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