Kind of a tie for me.
U.S. rifle, caliber .30, M-1(Garand) (Mine's an H&R)_
SMLE No.4, mk1* (Mine was made at Long Branch in Canada)
Of course, there was the ubiquitous Sten. ( roughly $1.50 per copy) Prolly killed more Gerry's than most of the others.
I didn't fight to defend your freedom so you could vote to take away mine.
"A man who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself.
John Stuart Mill."