Hello, I do not collect antiques but I have learned a few things (emphasis on "few") here on the Forum.
I own a 6 1/2 nickel Uberti Laramie in .45 Colt.
It has an "inner" hammer safety which I removed before we even left the shop where it was delivered because it was not allowing the handgun to fire. HOWEVER, removal of the safety simply creates the original "standard" of five rounds in the cylinder which is how I carry all single-actions anyhow.
The rear sight and barrel "latch" assembly does not correctly match the original New Model #3. But it is entirely serviceable.
The cylinder "locking" screw on the top of the frame is not original to the New Model #3. It is a simple manufacturing holdover from the Uberti "Russian" to save money on their end.
The cylinder, I believe, is longer than an original to accommodate the .45 Colt. As is so the frame as well I think.
The fit and finish on mine is excellent.
It's front sight was too low for 25 yard 250 grain Schofield loads at 750 fps. An easy fix I had my gunsmith just build a taller sight and swap out the original. KEEP the original as when the gun sells someone may want it.
You can find reproduction S&W "gutta percha" type grips at Dixie Gun Works and
Gun Grip - Home Page. They are the original maker and Dixie sells them as well. They will not give a perfect "frame-to-grip" fit but they do well enough that I like them.
I have attached a pic of mine. I like it very much.
There was some caterwauling over the fact that Uberti didn't "faithfully" copy the original #3 and in the caliber of .44 Russian as well. Those people who passed it up lost out. They now have attained a bit of collector status in their own right.
I load mine with actual .45 Schofield brass from Starline. I use 250 grain bullets at a reduced 750 fps to avoid too stout of a load that could stress the frame and stretch it. A 250 grain .45 caliber bullet at 750 fps is still a very potent load.