I've got a RRA Standard A4 20" on the way. Rock River is the hottest AR manufacturer at the moment. They offer some of the best quality rifles at a reasonable price and have a great variety to choose from. I've handled a 20" A2 from RRA and was very impressed with the rifle's overall fit and finish. Most of their stuff is Mil-Spec apart from their rear buffer tubes and barrels (usually chrome-moly HBAR's instead of A2 Gov't profile types). And on top of all that they have one of the meanest looking reciever logo stampings (unless you're into the overpriced ponies). They shoot and look great, highly recommend em'!