Things I liked:Holds quite a bit of ammo. makes a great finger/hand guard for your trigger finger.
Things I would have changed:the fact that its plastic. make it out of aluminum. it takes for ever to wind. so hard on the battle field. making it auto wind would make so much more sence for the high amount of ammunition.
What others should know:it holds 4500 rounds max. 500 short of the advertised 5000 still a lot.
Things I liked:I love having 5000 bbs on me and ready to fire. Even though this thing looks big, it is actually quite compact. It completely eliminates the need to reload. I haven't one problem with mine yet, and have used it quite a bit, and every time I did, I owned everyone else!
Things I would have changed:not really anything I can think of
What others should know:Even though it says that this mag fits TSD, it also fits Echo1 products like a glove. I have an Echo1 M16A3 DMR, and a simple switch from using the standard mags to one of these pretty much makes your gun into SAW(squad automatic weapon). I love this thing, especially when playing with alot of people, because the standard mags only hold 300, and I always seem to run out. Plus this 5000 rd box is only 3-4 dollars more than a standard 300rd mag.
Things I liked:I love the idea of carrying around 5000 never really have to worry about running out. I was pretty surpised on how compact it is.
Things I would have changed:I'd increase how many bbs it can hold when you crank it up just doesn't seem to hold to many.