Ha, I figured someone would come in with that offer pretty quickly!
Mike, I know they aren't too difficult to come by in most areas, but around my area they don't seem too easy to find (at least in shops). I do plan to pick some up at the gun show this weekend. As for the drama... it's just frustration because I literally just spent $85 on 4 mags, and only 1 actually works at this point so I'm just pissed, and frustrated that's all.
Yeah, I agree on that first mag that that was likely what happened, and I can fix that issue without too much effort (if not, it will make a great target!)
On the second one, I at first thought that I could dremel/file the u-notch, but after carefully watching the bolt while trying to cycle it, it doesn't hit that area. It is that the lips were bent, then welded with too much downward arc when compared to the mags that do feed properly, so it appears that I have to work on the lips a bit to get the rounds to raise higher so the bolt can grab them.
I do understand your caution on the mag release and definitely considered that if I removed too much material it would make other mags sloppy. I wasn't planning on that, just polishing the razor sharp edges a bit with a slight radius to deburr it/not alter the length. I do agree that the mag catch on that mag is where the material actually needs to be removed a bit because all the others release ok, other than that sharp edge dragging on the catch a bit. Don't worry, I'm very careful about material removal on the firearm itself.
I didn't build this particular rifle, but as a competent machinist I can identify many areas that were not deburred at all (such as the magwell itself), and this just causes issues when inserting, or removing the mags - especially the poly type that came with it. That one was getting chewed up from the razor sharp cnc'd magwell.
As for spending too much on the mags, you're right, but I didn't have a lot of options in my particular area (at least that I know of), and just wanted to grab 4 for now to be able to play with the rifle for now as the single 10 round one got old really quick!
I will be looking at the gun show this weekend though, so hopefully I can find some better ones, especially now that I know some potential "problem areas" to watch out for.