Assembled aero precision upper - Aero Precision AR-15 Assembled Upper Receiver

I have consistently purchased Del Ton uppers and had zero issues. In my most recent build i decided to go with a Aero Precision upper due to great reviews. I do have to say this upper is very light, came well contruscted, threads looked great, no problem with assembly. This was coupled with a 20" del ton barrel and utg handguard which all fit together very well, placed on an Anderson Lower with cmc lpk and trinity force mil spec carbine buffer extension with carbine buffer and spring. First time out i have had feeding issues where first 5 or 6 rounds are good 2 go than i get almost a double feed/ feed jam where the round catches on the m4 feed ramp and sticks. I cant fully blame this on the Aero upper because i am still trying to determine the issue which you all know could be alot of things, but i have never experienced this with other Del ton upper builds... Overall this is a good, light weight upper which is well constructed and high quality. I would buy another considering i determine the issue not to be related to the upper.