Just received my new A4 Flattop. Ordered the A4 upper and a match lower separately. I ordered the upper with a Weaver gas block and ordered the removable handle and removable front sight. The front sight was back ordered so I canceled that part and ordered it from Sable hoping to get it a little quicker. Rifle looks great! My dealer buddy had no experience with RRA but was very impressed with the fit and finish. Now to get the front sight so I can shoot the darn thing.