Go ahead and find a trigger group for it while you are researching and get one on order. With the guns you are used to shooting you will be sorely disappointed trying to hit anything with the one in that thing.
I have friends that have them. If you're buying a new one for $500 or less, I think they're an OK bargain but if you're having to spend much more than that I'd shop around .... the market is very soft and there are great deals on higher quality AR's in abundance.
I bought one last year when the local gun shop had a big sale. Put a larue trigger in it and that really helped tighten the groups up. No issues so far.