I worked for a firearm manufacturer for years. No gun went out for testing anywhere or to SHOT or the NRA show that wasn't assembled, fitted, finished and test fired by one of our most experienced people period.
That is as it should be. Too bad it’s not universally applied by all firearms manufacturers. . . . .
Old defunct almost-but-not-quite-gone-out-of-business
Remington damn sure didn't have any QC for the
Marlin/H&R part of their business.
Friend bought a Remlin lever, and you'd have thought
that they had brought in some Ugandan straight out
of the mud hut to assemble it.
Poorly fitted furniture, barrel clocked wrong, sharper
than supposed to be corners, etc.
Mr. Marlin dug a new canyon he was spinning
so hard in his grave.
There's numerous videos about this on yoofloob.
One I recall is " Death of the Marlin lever gun" IIRC
I had bought a couple of Rem built H&R's, and
they were a mess. When I got one home, I was
running a cleaning rod with a dry patch to get
whatever out of the barrel before I took it out
to shoot. It stuck somewhat a couple of times,
and I held it up to the light and saw that the
rifling was totally screwed up. It would twist
to the right for a couple of inches, then back
to the left for a couple of inches. Zig zag
like that from breech to muzzle.
They did fit a new barrel and smooth it
out, but there was absolutely no QC inspection
on that, and there's no way that any inspector
test fired it.
My other one would misfire every other shot.
It commuted between here and the "service
center " a couple of times. Work order says
replace this, fit that, readjust so-and-so.
They'd scarred it up so much I never sent
it back for a third try. I put my own Wolff
extra power spring in it and bent one
of the transfer bar pieces back straight
and put it back together. I fired some
primed cases, and they all popped off,
I've yet to give it a proper test.
When Remington padlocked everything, I
wasn't surprised at all