Well I know that the "dumb springy thingy" is an internal magazine, I'm just not a big fan of that. I'd much rather have an actual magazine that doesn't require me to load from top of the gun. I know you can by kits to convert it to a magazine set up but this ended up saving me from doing that. I still have a couple issue with the magazine but they are minor. Anyway thank you for the link on all of that. Great info.