Following this thread and the issues popping up long the way has only one major concern that the retailer sold a supposedly new item with old stock/and or parts as a supposedly Gen2 rifle. The OP obviously is not too upset about this but I have dealt with a few retailers who sell open box products as new with used/ missing parts, and after getting them home i returned them accordingly (ie, a laser light). Now i know retailers have a no return firearm policy but really the retailer should be held accountable for this one way or the other. i do also agree the manufacturer could had replaced the whoe upper receiver at least due to it blowing up like it did...IMHO thats all. I personally really question now how old and item is if its not in its original packing etc or on display, it's difficult to verify the authinticity.