I have owned a Kimber SIS Custom RL for over a year now. It is one of the most accurate guns out of the box that I have ever fired. When I purchased the 45, I heard all sorts of horror stories from several gun dealers I know. After the 1st 200 rounds I started to get FTL when I new mag was inserted and the frame released. After much research from both dealers and friends, these guns require a break in period, the factory mags are as good as the Wilson's or any other and don't clean it after every 100 rounds, at the beginning. I started cleaning after 300 rounds and Presto, after the 700 break in, No More Issues. The gun is as tight as when i bought it, a little more accurate (could be the shooter) and no other issues, None. I have found that most dealers, bad mouth them, as they don't want to contend with frustrated customers, who will or do not want to break it in properly. They have told me they rather sell a cheaper made unit, than deal with headaches, unless they know they are serious about their weapons. The manual clearly says and advises what ammo to use at the start and you know what, they are right. IMO if you want one of the best 1911's made, for any price, and are going to take the time to break it in, you will never go wrong with a Kimber. I depend on it working flawlessly every time I might need it and I sleep well knowing what I carry as a PDW is a Kimber.