Lol...Frost...story of my life. I was told by a friend in the army that every gun is different and sometimes not all guns work with the same buffer. They have a lot more funds to trouble shoot till they get it running. I just decided to quit before i ran out of money. I hate a fixed stock but it has grown on me cause it beats the alternative. The m4 stock was driving me to drink and cuss more than I already do.Frost said:How does the military solve this problem with M4s?