Also, (not sure if anyone mentioned this) but where exactly would you put the drum mag? There really is no sticking it in your pocket like the 6 roung mags. You also wouldn't want to leave it on the ground.
Sorry if this has already been posted, but if you look at the pic in the link, you can see a orange tab on the stock. Could this mean the stock maybe interchangeable with the recon's?
I know it's a long shot from probably being so, but why else would it be there?