OK, got my A2 20" expedition. Assembled it (went together so easily I was amazed) It shoots great and gives awesome groups. Everything is so smoothe I just wish like hell I had one this nice when I was in the Army. Now for the problem!!!
Along with my kit, I ordered 3 mags. They are the 30 rd commercial mags. You were out of the mil spec. Each mag has a problem of launching the last round. Occaisionally it is a double feed, but typically, as the bolt retracts to pick up the last round, the cartridge just pops up and causes the bolt to lock open. It does not matter how many rounds I load into the mag. 10, 20, 30, it always does it on the last round. I have E-mailed J&T customer service and haven't gotten a reply. Hopefully you can help. What do I need to do to fix this problem?