I purchased a brand new MR73 with a 5¾" barrel and rubber grip about a year ago and have since fired around 1,500 - 2,000 rounds with it. Either I'm getting more accustomed to it or it's getting better and better for every round I fire. The first I did to it was adjust the trigger weight to just above 1340 g, or around 50 oz, due to competition rules in my country, so now it only accepts Federal primers. This caused the trigger to barely return to starting point, but as the gun's wearing in, that's since improved. I've recently added a ball-end thrust screw to the trigger for a more distinct mark before hammer release. Not sure yet if I'll keep it or discard it. It has never been dry-fired, I have snap caps for that. Beyond that, all I do is oil and clean it. It's very easy to alter both hammer and trigger weight, as both have leaf springs with adjustment screws. Rear sight has typical horizontal and vertical adjustment but no width. It came with the sight already set correctly. Oh, it's my first and only revolver so far, yet I've had the pleasure of playing with 10s, 27s, 586s, 686s, GP100s, SP101s and a few others. Just not enough to get accustomed with them. No, I've never had the pleasure of trying a Colt.