What gun fired this mystery WWII era shell casing found in

I found a gun wrapped in a trash bag while detecting the woods

AK-47 - Wikipedia

Ww2 Us Army T W (1) Bullet Casing Ordnance Plant F A 42, 44% OFF

170 guns found in rivers and lakes 5 cold cases solved : r/pics

Auto Sears: The Return of the Machine Gun

Improvised firearm - Wikipedia

Ww2 Shell Casing

Firearms

Can anyone ID this WWII era shell? - General Ammunition Discussion

Handmade Trench Lighter WWI WWII Windproof Vintage