Sunday I was changing the trigger guard on one of my DPMS M4s and the right side of the trigger guard mount broke right off. It was properly braced and I used the approriate punch, but on the second tap, it snapped right off. This isn't my first time either, I've built ARs from parts kits, repaired them, and changed parts for over ten years on over 40 ARs. When I called DPMS about it, expecting a new or referbished reciever in exchange for the broken one, they said "installing or removing the trigger guard voids the warrenty" and that they would reweld it for $75. The reciever only cost me $105 out the door, now they expect me to pay $75+shipping on what could turn out to be an iffy job. I complained that I wasn't some beginer, pounding on it with a sledgehammer and the customer service guy said he would talk to "the man in charge of returns" and call me back. This was at 0945 and I waited all day with no call back. Until this happened I recommended DPMS to everybody looking for a great all-round AR for price, availablity, and reliablity. Now even Bushmaster is suspect to me since the same company owns both manufactures. The customer service guy gave me the impression that this is a fairly common occurance, but this is the first time I have ever seen or heard of this happening let alone to me. Has this happened to anyone else out there and if you had it rewelded how did it look and was it durable?