My Old Roll Mark (ORM) Colt 1991A1 is my main carry pistol. I've had it since the early 90's and it's been a great shooter. My replacements have been; new grips (wood), Wilson steel flat main spring housing, Wilson aluminum trigger, Wilson match bushing and Wilson thumb safety.
This gun shoots everything from cast 185 to 255 grain SWC's. It may have cost little (comparatively) but it's my carry and bed side gun.