AR-15 LoRider Upper Assembly Complete 5.56 NATO A3 20" Bull Barrel Flattop 1:8" Twist with Bolt and Carrier UCJSE20015

This upper groups very well. Did the proper barrel break in procedure as instructed and I could tell the groups got smaller. Last 10 shot group at 100 yards could be covered with half dollar. The only reason I didn't give it 5 stars was a minor cosmetic blemish on bottom of the barrel and the cover is hard to close sometimes. This is mainly a range gun and coyote gun so it didn't matter. I would definitely buy another. Next one will be a 6.5 grendel.