Couldn't have found a better guy to write on the subject. I know I learned a few things and you will too. Go check it out if you want to want to go full nerd on mags. . Link is in the bio

Quotas kill quality. As production volume increases, it becomes significantly more difficult to maintain a level of quality that you would at lower levels without the right systems in place. Unfortunately, the number of units delivered is often the only number that matters to many manufacturers and they expect a certain number, maybe 10-20% coming back for warranty. Meanwhile the end user has a 10-20% chance of receiving a part that is intentionally wrong. Its intentional because someone deemed it reasonable to allow unsatisfactory product into the market on the hopes you never notice. In this example, I have gas tubes all from the same place. The 3 on top came as they should. The two on the bottom have insufficient bends in them. While the exact location fore and aft isn't extremely important, the amount if offset is. I have found that more often, the bends in nitrided tubes are more likely to be relaxed and not have the required .156" offset. I dont know the exact cause of this but I expect it has something to do with heat from the nitriding process. I believe every tube should be checked for alignment after assembly, and many will need some minor adjustment. However, insufficient offset, especially on shorter tubes like carbine or pistol length in combination with a longer barrel nut can result in binding between the tube and the barrel nut and cause misalignment between the tube and gas key. Misalignment means premature wear at best and a gas key crashing into the tube at worst. Its your job while fitting and installing parts to look for inconsistencies or systems that don't operate as they should. Skilled assembly is ever more important the more we have panic buying or other high volume periods in the gun industry.

Thanks @sfptac for the new sticker!

Be careful about following advice in groups and forums. Not all of them create an environment that encourages sharing quality information. Many would rather create a safe space where anything goes rather than an arena where bad advice is called out and slain with a quickness before it breeds. Safe spaces don't work online any better than college campuses. High quality groups unfortunately often require a thick skin and an open mind if you really want to learn. And don't do this, clipping springs is almost always a bad idea. Check out the Facebook groups and forums available from @blackriflehaven @the_technical_ar15 @primaryandsecondary for good sources of info. Vet any others you come across carefully