I need info before pruchasing an used model 41 that is 7 1/2" and has the old style rear sight.
The slide has tapped holes for scope mounts. At what S/N or at rough age were the tapped holes standard?
Or, are the tapped holes only on the new models?
Is the old style (original) rear sight preferable to the newer Millet rear sight?

First, welcome to the forum. It sounds like we need to get some terminology straight. I'm assuming that what you are calling the slide is actually the barrel. This is a common mistake people make when talking about the Model 41. Also, if it’s the older barrel with muzzle bake, it’s a 7 3/8" barrel and the ones made without the muzzle brake are 7".

S&W started D&T Model 41 barrels in 1994 around SN: VAMxxxx. If this gun was made prior to that, and it sounds like it was, then the holes are not factory and do detract from the value to collectors. However, it could be a very good shooter, especially if you plan to put a scope or red dot on it.

The older style rear sight on the longer 7 3/8" and 7" barrels is a good solid sight however it is not as good as the rear sight that came on the 5.5" heavy barrels of the same time period. They are not interchangeable incidentally. The newer Millet and Keng style sights are good sights I believe.

I'm signed in but it won't let mt post under wanted. I was looking for a nice original 7 inch S&W BARREL for my 1997 41.These were pre drilled for scope. Any one have a nice one for sale? Thanks Ron

Please start a new thread.