To be fair, I haven't cycled live rounds through it, only dummy rounds, but I feel like these are a huge waste of money.
Your kidding right? Are they P-mags? no. But then they were $5.99 (and $2.99 for 20's) when P-mags were $17. I have some and they work fine. I also have some 20 rounders that I use and never had an issue. At $5.99 for many they were cheap mags for casual use. GI mags with black and green followers will go sideways as well. Some have had issues and some have not but let me turn your post around for you.

So I overpaid for an AR-15 at buds and since this is my first rifle made out of aluminum and plastic. Maybe I am being overly critical but it feels like utter junk. It feels like a toy compared to my M1 and fal. Just standing on the charging handle made it snap in two, It is a cast POS. the receiver was cast and and has all these lines in it instead of being machined from a block of steel.

To be honest I have not shot it yet but it feels like a POS. So did I get a piece of tupperware and aluminum foil because it looks like a water gun. I feel like this was a huge waste of money compared to a real rifle made of steel and wood.

I might suggest you try them before ya throw them completely under the bus. Are they something I would take into combat? no. Are they something I would take out to the range and shoot with? yes. If you bought these thinking they were like a P-mag or Lancer then shame on you for not doing your homework.

Just a thought.