I have seen this rifle on their web page, but they don't list any information on it. What is the difference between this rifle and their regular carbines?

It's a 16" A2 carbine with locking rear sight, Hogue grip, A2 stock, choice of CAR or Mid length gas system, and sells for less than their CAR A2.
Sluggo

I just got mine two weeks ago. It did take 8 weeks for me to get it though, Well worth the wait!!! It rocks. If you do a compairison between thier A2's and Tasc there is no difference really, except in price. I only paid $700 for mine. I got mine with the M4 hand guard and love it. I'd been shooting my buddy's bushmaster and I like my RRA alot more. I've only shot at 25m so far but my groups aren't more than 1/2" with iron sights, over 500 rds. already... I love the trigger too. If your thinking about it stop!!! Just get it you won't be dissapointed!!!!