I went and checked just to make certain, and my No. 1 Mk III magazine is correctly serial numbered to the gun.
Mine is a 1949 Ishapore, probably one of the last of the guns made under British dominion.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.