If yer talkin' about the timing and headspace issues, they figured those out.
$245/unit inc. $39 profit. LOL, I'll take 500 units, 1,000 rds/links/gun plus 50 linking tools, FOB FTW/w $50 profit/unit.
LOL, the good ol' days.
(Edit) Please throw in a million GM Guide Lamp Div. .45ACP Liberator Pistols (Edit: Sorry, Flare Projector Pistols, inc the .45ACP ammo) at the WWII agreed on price +$5.00/unit.