I completely agree with everything except the bit about Bear Creek, I can't talk shit when my 300blk upper from them runs well ๐
I mean, nobody wants to admit that they ~~ate 9 cans of ravioli~~ own a BCA, but I do and it's actually been surprisingly nice.
Okay memes aside, if buying BCA/PSA tier bottom bin parts know how to inspect them and make sure that they're good quality. With any firearm purchase actually give it a good look over, clean and prep it, know how to do little things like sanding down a feed ramp with a little bit of time and sandpaper (youtube is great for this). Don't just buy something planning to just shove it in the closet and not do any sort of work or prep or testing it at the range because if you do that, it's going to be a lot worse if you need it to work and it doesn't :)
A couple things I have to note, also as someone that used to do gun repairs and basic gunsmithing for a shop back in the day:
(Also learn to clean or at least do a half-ass clean if time is a problem after every range visit, we got so many firearms that looked like they hadn't been cleaned in years and were always a real bitch to take care of. My personal favorite was someone upset that we couldn't magically restore his "5 years in a garage in Florida humidity in a duffel bag never fired or cleaned" that was rusted and pitted to hell, and that it couldn't be brought back to factory new for 30 bucks ๐)
I haven't personally had this happen to me, but also range use will vary wildly from combat use so I can't speak on this too much.
They are because aluminum is very popular for manufacturing. If taken care of properly, this won't be an issue. See above that most people don't clean and maintain theirs properly lmao
Skill issue. Memes aside a good quality BCG is important for this reason. More people need to learn how the parts work on their build and change out parts as necessary if they are having issues with certain parts of it.