AT seems to dissapear in my presence, so never been fussed about it! If a new gun went wrong im so impatient I would just fix it myself. As I tune and fix these rifles all the time I would want to tune it when I got it and then be able to adjust accordingly as it bedded in. AT is good and bad really, for people who dont know anything about them it means they cant mess there gun up then send it back to the manufacturer and say it was already broken, but then the dissadvantage is for those that know there guns inside out and want to be able to tinker with them. Basically I would rather fix it myself and void the warranty and have it finished same day than have to wait weeks for it to be returned to me. Im sure alot of you think the same?