Teetering on the brink of submitting ATF paperwork for a Sten build. The only hesitation I'm feeling is that darn left side feed business. I just don't like that. But if I can make it a vertical feeder, I'm doing it. The weapon doesn't need to be traditional or original for me, so doing a modification (as long as it's legal) would not diminish the value for my purposes. Rather, that would be the go-ahead. Has anyone here done this? Ideas? Links? Resources? Thanks in advance.