When I began working in a plain clothes job with my department I retired my issued Colt Gunsite pistol, and began carrying a .45 ACP Colt Defender as my primary duty pistol. I had bought the Defender a couple years before, and had removed the rubber grips, fit a Wilson Combat tactical thumb safety, a short trigger, and had my gunsmith perform a trigger job on it. I had purchased the Defender new, and it had been 100% reliable from the get go. Before I began carrying it daily though I elected to have a few more upgrades performed on it. Since the gun came with the duckbill style grip safety, I had my gunsmith fit an upswept style GS that was more to my liking. I also had him fit a polished steel feed ramp insert, mill some serrations into the top of the slide, checker the front strap, fit a rounded Wilson Combat MSH, then refinish the stainless parts in IonBond. He also reannodized the receiver in black. I've carried this Defender daily since 2012, firing around 400 rounds per year through it. I noticed the slide was slowing down when firing weak hand only a couple years ago so I replaced the recoil spring assembly. The gun continues to perform perfectly with still never a single malfunction. I've since purchased a second Defender chambered in 9MM for my wife. It also ran well, but proved to large for her to carry in her purse compartment, so it mostly resides in my safe these days. At the time I bought my first Defender, I was aware of the poor dependability issues officer's 1911's were known for. I was expecting to have issues with mine, but they never materialized. I don't hesitate to recommend a Colt Defender as a carry gun.