A friend of mine has several 3rd gen slides with these rear sights on them. They appear to have been on these slides since their inception but of course that is just how it appears. No markings on it anywhere. Can anyone tell me about it, if it is factory S&W, rarity (if any), and or other useful info? Thanks, Daniel.

The only sight I have seen on a S&W semiauto that is sort of like that is a Wilson Commando sight installed on a PC 952-1. It has similar "Right" and "Raise" indicators next to the screws, but it lacks the index marks and seems to be clamp-mounted to a base rather than equipped with a trapezoidal foot that would be drifted into a slot on the slide.

The index lines are sort of Colt-like, but I suppose any manufacturer could have included them as a common-sense design element.

In my lack of experience I suppose these might be factory sights. I just haven't seen enough S&W semiautos to know some of the standard attachments.

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David Wilson

I remember seeing those quite a few years ago at the gun shows, they are a sort of a cheaper version of a BoMar, they were made as a "drop in" replacement for factory fixed sight pistols.....I cannot remember the make unfortunately, but I did have one on a Colt Gov't model, they made them to fit a few different models....

Did some digging in my parts box, it looks like an MK sight, they were made in Italy, I believe they went out of business and then were made by LPA......

It looks like the Millet rear sight I have on a 457.

I did a bit of google searching on millet, Mk, and LPA. Nothing looks exactly alike but the LPA versions that I am seeing look to be about the closest thing. The one thing about LPA is that most of them look to be marked LPA on the right side. It's a slick little design regardless of who made it. Thanks so far for the replies, they've certainly steered in the right direction.