I've been Googling around, called Sig CS too, and it seems there's some conflicting data out there, hoping the gurus here could help me out.

I have a P227 coming in that has the factory SigLite Night Sights on it, but I wanted to install an X-Ray front sight, as I've come to really like those. However, I've read and been told that although the correct factory front sight number for .45 ACP is #6, the X-Ray sights have a different number scheme and the same sight in that configuration is a #8.

There may be some truth to this, as a few years ago I got a P290RS (very, very cheap) and bought an X-Ray front sight for it, but after install it shot about 2" high at 15 yards. I called Sig back , they sold me a replacement rear sight set to compensate and after install, it still shoots 2" too high at 15 yards. It shoots tight groups, so I doubt it's a gun problem, it could be that if the X-ray sight had a different numbering system, the salesperson sold me a rear sight set according to a standard sight number, not X-ray, and got it wrong, thus selling me what I already had. I don't really know.

Question is, do the X-ray sights have their own number sets? I don't want to waste money on the wrong sight and end up with a pistol that shoots way too high again.

Thanks!

I believe there are only 2 front height sights-#6 and #8 but some models incorporate a combo of both in the front and rear. I prefer one sight height for both front and back,ie. 6-6 or 8-8,as I don't shoot the Sig Combat Sight system thingy well. Both the front and rear should be labeled/stamped as to what they are.I had a P365, that I had to change the front sight height to match the same rear sight and that made all of the difference in the world for my accuracy.

quote:

Originally posted by TexasRaider:
Question is, do the X-ray sights have their own number sets?

As far as I've researched, no, they do not.

The following site lists Sig sight numbers and their corresponding heights.

https://www.realgunreviews.com...ights-sight-numbers/

As far as quality control, you can use some calipers or a micrometer to check to see how accurate the actual height of your sights are if you have them removed.

A P227 is supposed to have #6 front & #8 rear, although occasionally a different height comes OEM. Sometimes this is done to sight in the gun properly. Sometimes it's a build error.

If you prefer something to 'combat sight' picture, then you should change out one of your sights, as patw did.