Again, there is the problem that the US Military made semi-auto firearms standard-issue, even making sure that 2nd line troops like mortarmen and truck drivers and artillery (well, truck drivers and artillery might actually be farther back than 2nd line) have M1 Carbines instead of being stuck with pistols or an M1903 variant. The M1 Garand became America’s standard-issue rifle.
http://fulton-armory.com/faqs/M1G-FAQs/tea/m1serial.htm
Look at May 1944, just over 2.9 million on the last of the month which means that on D-Day there was over 2.9 million M1 Garands produced.
“Total production of the SVT-38/40 was around 1,600,000 rifles, of which 51,710 were the SVT-40 sniper variant.”
That is from Wiki and has 3 sources. I’m also pretty sure that SVT-40 production died down substantially in 1942 and was probably ceased by 1943 or 1944. Most production was during 1941, possibly over a million in that year alone, which would be the majority of production. The USSR really could have beaten America to the punch and the SVT-40 could have been the first ever standard-issue semi-auto rifle, but Hitler had other plans.
Wiki says there’s an estimated 402,000 G43s (possibly includes G41s) made during WWII, which is around one-seventh of America’s M1 production.
Meanwhile, according to a book called ‘The M1 Carbine’ published in 2011 by Osprey Publishing, over 6 million M1 Carbines were produced in WWII, let’s say 4.5 million by D-Day though it may well be more like 5 million… So collectively that’s around 7.5 million semi auto M1 Garands and Carbines altogether by D-Day, going against Germany who made little over one twentieth of that in terms of G43 through the entire war. I think the STG44 and variants came to 200,000? No, 425,000, so actually more STG and variants than G43 it seems.
So if anything, the Germans are being pampered with how many semi-autos that are being made available. The Kar98k Mauser was, to my knowledge, their most commonly-issued rifle throughout the war, possibly save for the very end when maybe more of those Volksturm ‘last ditch’ firearms were being developed, though I cannot confidently say for sure, but they DID make a slightly lower-quality ‘last-ditch’ Kar98k in the end, but nowhere near to the extent that the Japanese went with their externally-crude ‘last-ditch’ Type 99.