I I finally hit the range with my new m4 and it went pretty good. I started at 25 yards and it took about 30 minutes of adjusting to get it right on bull. I moved back to 50 and it still was in target an I managed to take out a few bulls. To be honest my wife shot better than me. She tore up the bull at 50. Also I want to thank Unit44justin For some helpful tips on my sight in.I was using standard front sight and magpul flip up rear.