I've never shot a 945, but I am the original owner of a Series 70 Gold Cup. My observations are as follows: The GC trigger always left something to be desired. It has about 1/8" of take-up. While I like the wider target trigger, I could never find a replacement which the adjustable wings on the stirrup to eliminate the take-up. Many criticize the collet bushing as being prone to break. I never broke mine, but I did replace it and the barrel early on with a fitted barrel / solid bushing. Whichever barrel / bushing set up you use, the barrel throat needs to be ramped to reliability feed something other than hardball ammo. The recoil spring also needs to be replaced because the OEM is intended for light loads. The recoil will damage your receiver if you shoot higher velocity ammo. I replaced mine with a heavier spring and steel spring guide. I am indifferent about the target-style hammer, but it needs to be replaced if you want to install a beavertail grip safety. My original Patridge front sight fell off as it is only held with silver solder (ie: no pins). I replaced it with a ramped front sight. I do like the OEM flat mainspring over other Colt Government models. Finally, I replaced the thumb safety with an oversized one because the original is too small to operate quickly and reliability. That being said, I would never sell nor trade it.
