Between the 2 models of the Redi-Mag, the A-2 Quick Attach model and the A-1 standard model, is either one of those sturdier against the receiver than the other? I'm thinking about getting one and was leaning towards the Quick Attach model, but if the A1 is sturdier by virtue of being more permanently mounted, I think I'd go with that one. After all, I don't think that once it's mounted, I'd have any reason to unmount it and remount it on any regular basis, and I'd like it to be as sturdy as possible.
Another question I have is that I notice in most of the pictures I see of Redi-Mags that they are greyish type color and not necessarily the black color of the AR lowers that they're mounted on. Is this normal and is this the only way they come from the factory, or are my eyes deceiving me and they are actually black?